Seiko Epson Corporation

Tomoyuki Shiiya

Ken Ikuma

Keiichi Taguchi

Satoshi Chiba

Nobuyuki Mizushima

Akinobu Nakahata

Tsutomu Sasaki

Atsushi Imamura

Hiroshi Toyama

Itaru Kozuma

Shigeki Kato

Takahiro Yamashita

Masashi Kitahara

Atsushi Miyasaka

Yuya Kandabayashi

Yuji Hanaoka

A colorimetry device includes: a colorimetry unit including an irradiation unit including a substrate provided with a LED, and a light-receiving unit configured to receive reflected light that is light irradiated from the LED and reflected by the color chart image, the colorimetry unit being configured to perform colorimetry of the color chart image; a movement unit configured to cause the colorimetry unit to reciprocate along an intersecting direction; a calibration member provided in the intersecting direction; a temperature sensor configured to detect a temperature of the LED or a temperature of the substrate; and a colorimetry device control unit configured to move the colorimetry unit by the movement unit to a calibration member and calibrate the colorimetry unit when determining that the colorimetry unit is to be calibrated for the colorimetry of the color chart image based on the temperature detected by the temperature sensor.

Colorimetry device, printing device, and calibration method

A detection device including a first belt stretched over a first pulley and a second pulley, a first sensor being fixed to the first belt, a second belt stretched over a third pulley and a fourth pulley to be arranged in parallel to the first belt, a second sensor being fixed to the second belt, a drive unit configured to generate a driving force for moving the first belt and the second belt, a first rotation shaft, the first pulley being fixed to the first rotation shaft, a second rotation shaft, the third pulley being fixed to the second rotation shaft, and a coupling unit configured to couple the first rotation shaft with the second rotation shaft, in which the coupling unit is configured to adjust an angle as viewed from an axial direction of one of the first rotation shaft and the second rotation shaft.

Detection device and printing apparatus

A roll paper steering device includes a guide rail fixed to a main body frame, a guide engaged with the guide rail, a holding shaft fixing member supported by the guide rail via the guide, a roll paper holding unit including a roll shaft and mounted to the holding shaft fixing member, a movable member configured to adjustably mount to the holding shaft fixing member, a nut member that includes an internal thread portion that screws into the external thread portion and that is fixed to the main body frame in a posture where the axis of the external thread portion is parallel with the guide rail, a first adjustment unit configured to adjust the posture of the holding shaft fixing member, and a second adjustment unit configured to adjust the position at which the movable member.

Roll paper steering devive, printing apparatus and method for assembling printing roll paper steering device

A printing apparatus includes a mark sensor, a moving section, a web edge sensor, and a printer control section. The moving section can move the mark sensor in a direction intersecting a transport direction of a sheet, or in a width direction. The web edge sensor can detect a location of an edge of the sheet. The printer control section controls the moving section to compensate for a location of the mark sensor, on the basis of a detection result from the web edge sensor which indicates the location of the edge of the sheet.

Mark detection method using printing apparatus and printing apparatus

A printing method of a printing apparatus which includes a transport unit, a transport position output unit, a mark detecting unit, a steering unit, and a storage unit, the method including first processing in which the medium is transported by a first distance in the second direction, and positions the first mark on the downstream side of the detecting region in the second direction; second processing in which arriving at a predetermined position of the first mark is detected based on the output value of the drum encoder and a reference value; and third processing in which printing is started based on a detecting timing of the first mark, in which the first distance is a first stable transport distance or more which converges a deviation amount in the third direction into a predetermined first deviation amount until the first mark reaches the first predetermined position.

Printing method

There is provided a printing apparatus including: a mark detector which detects a mark that is formed on a recording medium and has a width in a first direction in a detection region thereof, and is supported to be rotatable around a rotation shaft that is parallel to a second direction intersecting with the first direction; a driving portion which drives the mark detector in the first direction; an angle determination portion which determines a rotation angle of the mark detector that considers the rotation shaft as a center; and a control portion which matches positions of the detection region and the mark in the first direction by adjusting a position of the mark detector in the first direction by the driving portion based on the rotation angle of the mark detector which is determined by the angle determination portion.

Printing apparatus and position adjusting method of mark detector

The liquid discharge apparatus includes a support member supporting a medium while rotating, a head facing the support member and discharging a liquid, a conveyance part conveying a medium between the support member and the head, and a foreign matter detection unit detecting a foreign matter heading toward between the support member and the head in association with the conveyance of the medium. The foreign matter detection unit has a movable roller that faces the support member upstream relative to the head in a conveyance direction of the medium, and nips the medium between the support member and the movable roller, a rotational support member rotatably supporting the movable roller to allow inclination of the movable roller relative to a rotational axis direction, which is a center of rotation of the support member, and a retention member movably retaining the rotational support member in a direction toward the support member.

Liquid discharge apparatus

An image recording apparatus includes an ejecting head which ejects photocurable liquid onto the recording medium; and a light irradiator which radiates the light to the liquid which is ejected onto the recording medium, in which the light irradiator includes a light source substrate which is arranged so as to face the recording medium, and includes a light source which radiates the light to the recording medium; a heat transport member which includes a portion to be connected which is in thermal contact with the light source substrate, and a portion to be cooled which is located at a position which is further separated from the light source substrate than the portion to be connected, and transports heat from the portion to be connected to the portion to be cooled; and a cooling fan which cools down the portion to be cooled.

Image recording apparatus with a heat transport member

A head driving mechanism includes a first cam follower an end portion of which is attached to a first holding unit and the other end portion of which includes a first sliding-contact surface disposed in sliding contact with a cam, and a second cam follower an end portion of which is attached to the second holding unit and the other end portion of which includes a second sliding-contact surface disposed in sliding contact with the cam. The first cam follower and the second cam follower are each displaced by rotation of the cam so as to move the first printing head and the second printing head, while the first sliding-contact surface and the second sliding-contact surface are in sliding contact with an outer circumferential surface of the cam.

Head moving mechanism and printing apparatus

A cleaning device includes a cleaning roller which contacts an intermediate transfer belt for carrying an image developed using a liquid developer, a cleaning roller which contacts the other cleaning roller and has a greater axial length than the other cleaning roller, and a rubber blade which contacts the cleaning roller and has a greater axial length than the cleaning roller.

Cleaning device, image formation device, and image formation method

A cleaning apparatus includes a first cleaning roller, and a second cleaning roller. The first cleaning roller is contrived to contact to a circumferential surface against a moving member to be cleaned and to apply a bias to the member to be cleaned while rotating such that the circumferential surface of the first cleaning roller moves in a same direction as the member to be cleaned moves. The second cleaning roller is contrived to contact to the member to be cleaned after the member has been cleaned by the first cleaning roller and to rotate such that a circumferential surface of the second cleaning roller moves in a direction opposite a direction in which the member being cleaned moves.

Cleaning apparatus and image forming apparatus

An image forming apparatus includes: a latent image bearing member on which a latent image is formed; a developing unit that develops the latent image using a liquid developer; a transfer member onto which the image is transferred; a cleaning unit that cleans the latent image bearing member; a cleaning roller, to which a bias is applied, that cleans the transfer member by making contact with the transfer member; a blade that cleans the cleaning roller by making contact with the cleaning roller; a cleaning blade that cleans the transfer member cleaned by the cleaning roller by making contact with the transfer member; a holding unit that holds collected material scratched by the blade and the cleaning blade; an application unit that applies the collected material to the cleaning roller; and a transport channel that transports the collected material collected by the cleaning unit to the holding unit.

Image forming apparatus and image forming method

A transfer device includes: a first transfer belt; a first and second roller on which the first transfer belt is wound; a second transfer belt which makes contact with the first transfer belt; a third roller on which the second transfer belt is wound, and which makes contact with the first roller via the first transfer belt and the second transfer belt; a fourth roller on which the second transfer belt is wound, and which makes contact with the second roller via the first transfer belt and the second transfer belt; a first drive force transmission mechanism which transmits a drive force to the first roller; and a second drive force transmission mechanism which transmits a drive force to the third roller.

Transfer device and image forming apparatus including the same

An image forming apparatus comprising: an image carrier that carries an image; a charging section that electrically charges the image carrier; an exposure section that forms a latent image on the image carrier electrically charged by the charging section; a development section that develops the latent image formed by the exposure section on the image carrier by means of a liquid developer; a primary transfer section that transfers a image developed by the development section onto a transfer medium; a secondary transfer section that transfers a image transferred onto the transfer medium further onto a recording medium by pressing the transfer medium; and a variable transfer pressure application section that applies transfer pressure of a first level or of a second level at the secondary transfer section.

Image forming apparatus and method of controlling image forming apparatus

An image-forming apparatus has a limitation padand a retard roller, which separately feed recording paper P on an elevation trayin an MPT coverby bringing the recording paper P against an outer peripheral surfaceof the feeding roller. In this image-forming apparatus (paper feeder), when the feeding roller is stopped by passing recording paper to be separately fed to a pair of relay transport rollers, the elevation tray is lowered before stoppage of the feeding roller, thereby separating an extremity of the recording paper from the outer peripheral surface of the feeding roller.

Growing community of inventors

Matsumoto, Japan

Tomoyuki Shiiya