Seiko Epson Corporation

Kunihiro Kawada

Yujiro Nomura

Ken Ikuma

Nobuyuki Mizushima

Motomu Hayakawa

Atsushi Imamura

Koji Kitazawa

Akira Nakajima

Naoki Hori

Masashi Oba

Shinji Kawakami

Teruyuki Inukai

A liquid discharging apparatus includes a first substrate which includes a drive circuit which generates a drive signal and a first connector, a discharge head which includes greater than or equal to 300 nozzles per inch and a total of greater than or equal to 600 nozzles, which receives the drive signal and which discharges a liquid from the nozzles, and a second substrate which includes a second connector which is connected to the first connector, in which at least one of the first connector and the second connector includes a detection terminal for detecting a connection with the other of the first connector and the second connector.

Liquid discharging apparatus

An output value of the transport position output portion when a first mark which is provided in a recording medium is at a predetermined position with respect to a detection region is stored in a storage portion as a reference value, and a start timing of the printing of the image is controlled based on the timing at which the mark detection portion detects the mark after confirming that the first mark reaches a predetermined range from the detection region based on comparison of the output value of the transport position output portion and the reference value with each other, when the transport in the first direction of the recording medium is started.

Printing apparatus and printing method

An image forming apparatus includes a first image carrier that carries a first latent image. A first charging section charges the first image carrier. A first exposure section exposes the first image carrier charged by the first charging section. A first developing section develops the first latent image formed on the first image carrier in the first exposure section using a first liquid developer containing a carrier and first toner particles. A first primary transfer section transfers a first image developed in the first developing section onto a transfer medium. A second image carrier carries a second latent image. A second charging section charges the second image carrier. A second exposure section exposes the second image carrier charged by the second charging section.

Image forming apparatus and image forming apparatus control method

An image forming apparatus, includes: an exposure head that includes an imaging optical system which is arranged in a first direction and a light emitting element which emits light to be focused by the imaging optical system; a latent image carrier that moves in a second direction orthogonal to or substantially orthogonal to the first direction and carries a latent image which is formed by the exposure head; a developing unit that develops the latent image formed on the latent image carrier by the exposure head; and a detector that detects an image which is developed by the developing unit and is formed using one imaging optical system.

Image forming apparatus and method for stably detecting an image

The invention provides an image forming apparatus and an image forming method capable of smoothly and reasonably conducting image formation in case of using a lens (lenses) of which optical magnification is minus. An image forming apparatus of the invention comprises: a line head having lenses of which optical magnification is minus and a light emitter array in which a plurality of light emitting elements are aligned. The lenses are plural in an axial direction (main scanning direction) of an image carrier and a direction (sub scanning direction) perpendicular to the axial direction. A light emitter block composed of 'm&#xd7;n' (in number) light emitting elements is disposed relative to each lens. The 'm&#xd7;n' light emitting elements comprises &#x201c;n&#x201d; (in number) light emitting element lines arranged in the direction perpendicular to the axial direction and each light emitting element line includes &#x201c;m&#x201d; (in number) light emitting elements aligned in the axial direction. The image forming apparatus further comprises: a control means for actuating the respective light emitting elements to emit lights to be inversed in the axial direction and the direction perpendicular to the axial direction to form an image on the image carrier. In this manner, images of plural colors are formed on the image carrier at once.

Image forming method for forming images of plural colors on an image carrier at once

An image forming apparatus, includes: a latent image carrier that moves in a first direction; an exposure head that includes a light emitting element and an imaging optical system row which is arranged in the first direction and which is made up of imaging optical systems which are arranged in a second direction different from the first direction and image light emitted from the light emitting element on the latent image carrier; a developing unit that develops a latent image formed on the latent image carrier by the exposure head; and two detectors that detect an image obtained by developing a latent image by the developing unit, the latent image being formed using the same imaging optical system row.

Image forming apparatus, an image forming method and an image detecting method

An image forming apparatus, includes: an exposure head that includes a plurality of imaging optical systems which are arranged in a first direction and a plurality of light emitting elements which emit lights to be imaged by the imaging optical systems; a latent image carrier that moves in a second direction orthogonal to or substantially orthogonal to the first direction and carries a latent image formed by the exposure head; a developer that develops the latent image; and a detector that detects an image developed by the developer, wherein the image detected by the detector has a width in the first direction wider than that of an image formed by one imaging optical system.

A registration mark is a toner image which has a first linear pattern and a second linear pattern, which extend along a main scanning direction, and a two-dimensional pattern. The first linear pattern, the two-dimensional pattern and the second linear pattern are arranged apart from each other in this order along a transporting direction. In short, the linear patterns and extending along the main scanning direction are formed spaced apart from the two-dimensional pattern, one toward the upstream side and the other toward the downstream side, along the transporting direction. This suppresses the edge effect along the transporting direction and realizes accurate detection of the position of each registration mark by a test pattern sensor.

Image forming apparatus

Prior to the formation of registration pattern images (Step S), base information is acquired by means of a test pattern sensor detecting a surface of an intermediate transfer belt or particularly a surface of a pattern formation region thereof. A surface condition of the pattern formation region is acquired based on the base information thus acquired, while the formation of the registration pattern images is controlled based on the surface condition. In this manner, the registration pattern images are formed with an adequate consideration given to the surface condition of the pattern formation region where the registration pattern images are to be formed (Step S). Hence, the positions of the registration pattern images may be detected with high accuracies. As a result, a proper correction of color registration offset may be accomplished, assuredly preventing the occurrence of the color registration offset or degraded color tone.

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Matsumoto, Japan

Kunihiro Kawada