Seiko Epson Corporation

Susumu Murayama

Seiichi Hirano

Masanori Yoshida

Atsushi Nishizawa

Tsuyoshi Tomii

Masaki Shimomura

Satoshi Fujioka

Kenichi Miyazaki

Hiromi Shishiuchi

Kazumi Kamoi

Takayuki Okuda

Fujio Akahane

Toshikazu Kotaka

Narihiro Oki

Yoshifumi Arai

Seishin Yoshida

Tatsuya Seshimo

Koichiro Yokoyama

Takashi Kato

Kazuo Saito

Yoichi Kobayashi

Masayuki Kumazaki

Kazutoshi Kashiwabara

Kazuhiko Yamaguchi

Kohji Watanabe

Kenjiro Ishihara

Yoshikatsu Yamamoto

Hayato Nishikaze

Keiichi Oshima

Kouichirou Yokoyama

Michiyo Ichikawa

Koichi Endo

Nao Ozawa

Display image data for displaying images on a screen, and when display image data that has undergone specified gradation conversion is received, the characteristics of the output brightness displayed on the screen is checked. In the area for which the output brightness of the display image data is convex at the bottom in relation to the image data gradation values, the display image data gradation values are corrected so as to have a roughly linear relationship between the gradation values and the output brightness. Printing image data is generated based on the post-correction image data and an image is printed. In the area for which the output brightness bottom is convex, by performing this kind of correction, it is possible to print an image with an impression closer to the display on the screen. As a result, it is possible to print images on the monitor screen easily and without losing the impression received from the image displayed on the monitor screen.

Printing device for printing images with ink and printing method for the same

In printing using a plurality of chromatic color inks of different lightness interchangeable with one another in color reproduction, ink consumption is reduced while preserving the quality of the printed result. On the basis of first color data represented in terms of density of a first reference color, second color data represented in terms of density of a plurality of second reference colors is generated. The plurality of second reference colors are the ink colors. They include two same hue reference colors of different lightness interchangeable with one another when reproducing a certain color. The lookup table holds the first color data and the second color data associated with one another. For a set of densities of a plurality of second reference colors representing achromatic color of higher lightness than the reference lightness, density of the same hue reference color having lower lightness is 0. The reference lightness is lightness equal to or less than the minimum lightness which is the lightness of the color having the lowest lightness among the colors that can be reproduced on a printing medium using only ink of the darker color of the two same hue reference colors.

Creation of lookup table for printing with contrasting density ink

An ink jet printer including a carriage which moves along a print area, a head mounted on the carriage, an ink cartridge mounted on the carriage for supplying ink to the head, a lever on the carriage for mounting or demounting the ink cartridge with respect to the carriage and a stopper for stopping the movement of the carriage by coming into contact with the lever when an operation of mounting the ink cartridge by the lever has not been completely effected. The ink jet printer may also include a resilient member for supporting the ink cartridge on the carriage.

Printer including an ink cartridge

A client controls printing of color chips (images for colorimetry) with a plurality of tones for individual color inks (printing colorants). The client acquires from a server a tone value correction table (color matching information) to match standard colors. The server can acquire the lightness data of color chips for individual inks and create the tone value correction table based on the lightness data of color chips of individual color inks and the lightness data of standard colors corresponding to the color inks, and subsequently send the color matching information to the client. As a result, it is easier to produce colors that match standard colors.

Color matching server, color matching client, print control server, print control client, print control system, print control process, medium on which print control program is stored profile providing server and profile demanding client

An ink jet printer including a cartridge which moves along a print area, a head mounted on the carriage, an ink cartridge mounted on the cartridge for supplying ink to the head, a lever on the carriage for mounting or demounting the ink cartridge with respect to the carriage and a stopper for stopping the movement of the carriage by coming into contact with the lever when an operation of mounting the ink cartridge by the lever has not been completely effected. The ink jet printer may also include a resilient member for supporting the ink cartridge on the carriage.

A supporting part,arranged nearer to a head,than a pair of carrier rollers,and on the same side as a rib,based upon paper S for supporting the side Sb of the paper S toward the head,is provided. The supporting part,is formed so that it is wider than the rib,The driving roller,of the pair of carrier rollers and the supporting part,are overlapped when they are viewed from a direction in which paper is carried. A ringed member,may be also provided in place of overlapping the supporting part,and the driving roller

Ink-jet printer for preventing contact between a sheet and in ink-jet head

An ink jet printer is provided for ejecting ink droplet to paper fed into a recording section. The ink jet printer includes a print head. An ink intercept plate is disposed is disposal on a paper feed path. The intercept plate includes a print surface which has a slope which declines along the advancing paper feed direction. The print surface is disposed opposite the print head. A groove extends away from the print surface of the ink intercept plate for transporting unused ink away from the print surface.

Printer having a guide plate for transporting waste ink

A sheet feeder, or a printer incorporating the sheet feeder, has separation pads for separating a sheet to be fed by sheet feed rollers from the next sheet and a roller spring which produce urging force smaller than that produced by a spring of the separation pad. Idle rollers are brought into contact with the separation pads by means of the roller spring, thereby preventing the lowering of the next sheet. A sheet reset lever is pivoted so as to return the next sheet to a hopper. As a result, the sheet sheets stacked on the hopper in an inclined state is fed one by one through use of a separation pad method without increasing force for driving rollers and a back tension.

Sheet feeder and printer

In a printer, a bottom of an automatic paper feeder is formed by a bottom itself of a printer case; an operation lever is provided for operating a hopper and separation pawls arranged in a stacker section; a spring member is used as a changeover mechanism for a paper feed-in roller; an ink shielding portion is provided over an entire print area; the paper is discharged while forcibly urging the paper in a concave shape in which its printed surface is concaved; and a changeover is effected between a paper feeding operation and a pumping operation by a carriage at both ends of a carriage-moving area.

Printer sheet discharge method

A paper feeding apparatus and a printer wherein an idle roller is brought into contact with a separation pad by a roller spring for generating urging force smaller than that of a separation pad for separating a paper sheet to be fed by a paper feeding roller having a D-shape side cross section from a next paper sheet; a restraining pin for restraining movement of the separation pad toward the paper feeding roller when the paper sheet is not held between the separation pad and the paper feeding roller is provided; a pair of conveying rollers are temporarily and inversely rotated after the leading end of the paper sheet has passed through a nipping portion between the pair of the conveying rollers and in a state where the paper sheet is not held between the separation pad and a circular-arc portion of the paper feeding roller so as to arrange the leading end of the paper sheet along the nipping portion so that diagonal conveyance of the paper sheet is smoothly prevented and the load acting on the fed paper sheet is reduced.

Paper feeding apparatus and printer

The ink jet printer is provided which eliminates play between a carriage supporting an ink jet head and a guide shaft, allows the ink jet head to be releasably attached to the carriage, and provides reliable electrical connection between the ink jet head and the carriage with a reduced number of parts. An embodiment of the ink jet printer of the invention includes a guide shaft extending in a direction orthogonal to a direction in which paper is forwarded. A carriage is slidably mounted on the shaft, moving in reciprocal directions while being guided by the guide shaft. An ink jet head, releasably attached to the carriage, prints ink dots on the paper for forming a printed image by jetting ink out of nozzles. A first electrically connecting portion is arranged on the carriage. A second electrically connecting portion is arranged on the ink jet head so as to come in pressure contact with the first electrically connecting portion. A biasing member provides a pressing force between the first electrically connecting portion and the second electrically connecting portion.

Ink jet printer

In an ink jet printer, a recording unit in which an ink cartridge is detachably mounted has a cartridge removal preventing member so that the ink cartridge is prevented from being carelessly removed therefrom, and a moving mechanism is provided which, when the recording unit is mounted on the carriage, moves a first electrical connecting section towards a second electrical connecting section so that the first and second electrical connecting section are connected to each other with the aid of an energizing member under pressure, and, when the recording head is removed from the carriage, moves the first electrical connecting section away from the second electrical connecting section against the elastic force of the energizing member, whereby the recording head is detachably mounted on the carriage, and the former is positively electrically connected to the latter.

Ink jet type recording unit with an improved carriage structure

An actuation mechanism for a lever including a spring member supported by the lever and frame of the printer and an actuation portion for rotating the lever by pressing and displacing an intermediate portion of the spring member. The printer may include a feed-in roller for feeding sheets of paper, a carriage for printing the sheet fed by the feed-in roller, a feed-in gear for rotating the feed-in roller, a movable gear rotatably supported by a rotatable lever and capable of assuming a first position in which the movable gear meshes with the feed-in gear to rotate the feed-in gear and a second position in which the movable gear does not mesh with the feed-in gear, and an actuation mechanism.

Growing community of inventors

Nagano, Japan

Susumu Murayama