Canon Kabushiki Kaisha

Masashi Hayashi

Norihiro Kawatoko

Toshiyuki Chikuma

Hidehiko Kanda

Jiro Moriyama

Hirokazu Tanaka

Kentaro Muro

Atsushi Sakamoto

Yuji Hamasaki

Eiji Komamiya

Aya Hayashi

Tetsuya Edamura

Hitoshi Nishikori

Atsushi Arai

Yuji Konno

Takeshi Yazawa

Daisuke Kobayashi

Akira Kida

Takaaki Ishida

Masakazu Tsukuda

Masaaki Matsuura

Kazunori Yamauchi

Koki Kudo

Minoru Teshigawara

Junichi Nakagawa

Yutaka Kano

Takeshi Murase

Seiji Abe

Hinako Ojiro

Yuki Sawai

Akira Yamamoto

Kazuhiro Yamada

Kiichiro Takahashi

Osamu Iwasaki

Seiichiro Karita

Atsushi Takahashi

Yoshiyuki Nakagawa

Hiroyuki Saito

Akio Saito

Shingo Okushima

Yoshiaki Murayama

Shuzo Iwanaga

Atsuhiko Masuyama

Noriyasu Nagai

Takatsuna Aoki

Hirokazu Yoshikawa

Susumu Hirosawa

Tomoki Yamamuro

Satoshi Masuda

Yuhei Oikawa

Masahiko Umezawa

Tsukasa Doi

Zentaro Tamenaga

Shuichi Tokuda

Fumiko Suzuki

Tatsurou Mori

Asako Tomida

Yoshihiro Hamada

Satoshi Kitai

Toshiaki Somano

Shinsuke Ikegami

Kouichi Serizawa

Ayako Iwasaki

Takahide Takeishi

A recording apparatus includes a conveyance unit, a conveyance path, a double-sided conveyance path, and first and second charge eliminators. The conveyance unit conveys a recording medium having first and second surfaces in a first direction through the conveyance path to a recording area where recording is performed by a recording unit on the first surface. The recording medium then passes through the double-sided conveyance path before recording is performed on the second surface. The first charge eliminator eliminates charges from the first surface and is disposed at a position downstream of a junction between the conveyance path and the double-sided conveyance path in the first direction and upstream of the recording area in the first direction. The second charge eliminator eliminate charges from the second surface and is disposed downstream of the junction in the first direction and upstream of the recording area in the first direction.

Recording apparatus and conveyance apparatus

A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.

Printing apparatus, printing method, and storage medium

A recording apparatus includes a print head, a recovery unit, a type obtaining unit, a threshold obtaining unit, and a calculation unit. The print head forms an image by applying a recording material to a recording medium. The recovery unit performs a recovery operation for recovering an ejection state of the print head. The type obtaining unit obtains a type of the recording medium on which the image is to be recorded. The threshold obtaining unit obtains a threshold for performing the recovery operation corresponding to the obtained type of the recording medium. The calculation unit calculates a count-up value by adding, in response to recording on the recording medium, an addition value set for each of types of recording media. The recovery operation is performed in a case where the count-up value calculated by the calculation unit exceeds the threshold obtained by the threshold obtaining unit.

Recording apparatus, method, and storage medium

A recording apparatus includes a recording unit, a conveyance unit, an application amount information acquisition unit, a determination unit, a direction information acquisition unit, and a setting unit. The recording unit performs recording by applying ink to paper. The application amount information acquisition unit acquires information related to an amount of ink that the recording unit applies to a predetermined region of the paper. The determination unit determines execution of prevention or reduction processing for preventing or reducing curling occurring after recording is performed. The determination is made according to the acquired amount of ink. The direction information acquisition unit acquires information indicating a paper grain direction of the paper relative to a conveyance direction in which the conveyance unit conveys the paper. The setting unit sets the predetermined region according to the paper grain direction relative to the conveyance direction indicated by the acquired paper grain direction information.

Recording apparatus

A recording apparatus includes a conveying unit, a supporting unit, and a static elimination unit. The conveying unit conveys a recording medium in a first direction to a recording area where recording is performed by a recording unit. The supporting unit supports the recording medium conveyed by the conveying unit and includes an abutment surface that abuts the recording medium when the supporting unit supports the recording medium. The static elimination unit eliminates static from the recording medium in a static elimination portion. The static elimination portion is not provided at a position opposed to the abutment surface and is provided at a position not opposed to the abutment surface in the supporting unit.

Recording apparatus and conveying apparatus

A print medium is conveyed in a first direction and a print head is provided with a reference side nozzle array and a plurality of nonreference side nozzle arrays. A relative position displacement amount between a reference printing position of a reference pattern printed by the reference side nozzle array and a nonreference printing position of each of nonreference patterns printed by each of the nonreference side nozzle arrays is detected. Based on a maximum value of a displacement amount of the reference printing position with respect to each of the nonreference printing positions in a direction opposite to the first direction, a first correction value for correcting displacement of the reference printing position is calculated. With reference to the reference printing position after corrected based on the first correction value, a second correction value for correcting displacement is calculated for each of the nonreference printing positions.

Inkjet printing apparatus, inkjet printing method, and storage medium

A printing apparatus using a printhead that includes an inspection circuit for inspecting an ink discharge status for each nozzle performs an inspection processing. The apparatus selects a nozzle as a target of inspection of the ink discharge status, sets a threshold value for inspecting a detection result of a temperature detection element corresponding to the selected nozzle, and uses the inspection circuit and the set threshold value. The apparatus receives, from the printhead, an inspection result for the selected nozzle, determines, based on the received inspection result, a threshold value to be used by the inspection circuit for inspecting the discharge status of the selected nozzle in a subsequent inspection, and stores the determined threshold value in a memory.

Printing apparatus and discharge status judgment method

An image forming apparatuscapable of performing printing with a high image quality, and a control method of the image forming apparatusare provided. For this purpose, a threshold value Dt is preliminarily set that allows printing without occurrence of blur, for each of preliminarily set monitoring areas A. In the case where a print duty for each of the monitoring areas A has exceeded the threshold value Dt, an ejection frequency of ink and conveying speed of a print medium are reduced in association therebetween.

Image forming apparatus and control method of image forming apparatus

A recording apparatus is provided for determining a relative moving speed between a recording head and a recording medium based on application amount information and power information corresponding to power for driving a heating element. In a case of the power amount in a first amount, the moving speed is determined as a first speed in a case where an application amount is equal to a predetermined amount, and the moving speed is determined as a speed higher than the first speed in a case where the application amount is smaller than the predetermined amount. In a case of the power amount in a second amount smaller than the first amount, the moving speed is determined as a speed higher than the first speed in a case where the application amount is equal to the predetermined amount.

Recording apparatus and recording method

A print head capable of forming dots on a print medium based on print data and a print medium are caused to perform relative movement in a specified direction, and a speed of the relative movement is set according to the number of dots to be formed in an area of a specified size. Whether to set the speed of the relative movement to a first speed is determined according to the number of dots to be formed in an area of a first size on the print medium. Whether to set the speed of the relative movement to a second speed lower than the first speed is determined according to the number of dots to be formed in an area of a second size which is smaller than the area of the first size in the specified direction.

A recording apparatus includes a recording head, a circulation channel, a concentration acquisition unit, an adjustment unit, and a control unit. The recording head includes a plurality of discharge ports through which ink is discharged and a pressure chamber being in communication with the plurality of discharge ports. The circulation channel is in communication with the pressure chamber to circulate the ink between the pressure chamber and an external portion thereof such that the ink is supplied to and collected from the pressure chamber. The concentration acquisition unit is configured to acquire concentration information about an ink concentration in the circulation channel. The adjustment unit is configured to adjust a timing to discharge the ink based on the concentration information. The control unit is configured to control a recording operation of recording by discharging the ink from the recording head such that the ink is discharged at the adjusted timing.

Priority order is updated so that an ejection port that is selected as an ejection port subjected to ejection failure determination in a pixel row in which a previous ejection operation is to be performed has the lowest priority order, which is used for selecting an ejection port subjected to ejection failure determination, in a pixel row in which a subsequent ejection operation is to be performed.

An apparatus includes a recording head including a first discharge port array and a second discharge port array, the first and second discharge port arrays being shifted and arranged in a first direction so that part of the discharge ports arranged at an end portion of the first discharge port array in the first direction and part of the discharge ports arranged at an end potion of the second discharge port array in the first direction are located at the same positions in the first direction. The plurality of discharge ports in each of the first and second discharge port arrays is obliquely arranged at a predetermined tilt with respect to the first direction. Discharge timing is adjusted based on the tilt of the discharge port arrays.

In order to keep possible local temperature differences in a liquid ejection head small to allow stable liquid ejection performance to be achieved, temperatures in a plurality of heating areas in a liquid ejection head are discretely controlled using heating elements and temperature detection elements.

Liquid ejection head, liquid ejection apparatus, and temperature control method for liquid ejection head

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Yokohama, Japan

Masashi Hayashi