Sony Corporation

Siemens Aktiengesellschaft

Toshiki Kagami

Makoto Ando

Koichiro Kishima

Shigeyoshi Hirashima

Hiromitsu Takeda

Tetsuo Nakayama

Hiroshi Tokunaga

Atsushi Oda

Takaaki Murakami

Masayuki Sato

Kazuyasu Takenaka

Kengo Ito

Yasuji Yui

Masanobu Hida

Katsuhisa Ono

Motohiro Mizumachi

Yoshiaki Haba

Akihito Miyazaki

Noriko Kasahara

A platen plate for supporting an ejection object for liquid droplets ejected from each nozzle on the bottom surface of a liquid ejection head can secure the flatness of the ejection object so as to appropriately eject ink as well as can prevent the contamination of the bottom surface of the ejection object. The platen plate is provided with a plurality of ribs raised from its bottom surface so as to extend in a conveying direction of a recording sheet and arranged at predetermined intervals in a width wise direction of the recording sheet, and out of a region where ink droplets ejected from the each nozzle are landed, the bottom surface of the recording sheet is supported with top faces of the ribs so as to define a distance between the recording sheet and the ink ejection surface, and within the region where ink droplets ejected from the each nozzle are landed, the rib top faces are formed to have a height, or the ribs themselves do not exist, so that the rib top faces are not brought into contact with the bottom surface of the recording sheet.

Platen plate and liquid discharging device

Disclosed herein is a printer having a printer body and a consumable related to printing means, such as an ink cartridge and an ink ribbon, wherein the consumable can be very easily replaced and the electrical connection between the consumable and the printer body can be easily effected. In a printer ( ) having a printer body ( ) and an ink cartridge (consumable related to printing means) ( ) replaceably mounted in the printer body, an ink cartridge tray (consumable tray) ( ) for detachably storing the ink cartridge is movably provided in the printer body. A connector ( ) provided on the ink cartridge is connected to a connector ( ) provided in the printer body when the ink cartridge tray is inserted into the printer body.

Printer

A printing device according to the present invention assures stable mixing and ejecting operations without provision of complicated mechanisms such as valves. The printing device includes an ejecting nozzle with a first discharge opening and a metering nozzle with a, second discharge opening, which are provided separately from each other to feed two kinds of fluids through the first and second discharge openings, respectively. The two kinds of fluids are mixed together to form a fluid mixture to be ejected toward a recording medium. A minimum distance d between the first and second discharge openings of the metering and ejecting nozzles is in the range of 0&lE;d&lE;5(S,) where S,stands for an opening area of the first discharge opening of the ejecting nozzle.

Printing device

A printer device for emitting a medium or mixing and emitting a medium for quantitation and a medium for emission, in which a correct recording image can be formed with a suppressed running cost. At least one tank 51 is provided which has at least one first liquid chamber 52 in which is disposed a liquid holder 53. A print head is provided which has a nozzle in association with this first liquid chamber 52. Preferably, at least one second tank is provided which has a second liquid chamber in association with the first liquid chamber 52 of the first tank 51 for direct communication between the two chambers. The printer device can be configured for emitting only the emission medium of mixing the quantitation medium and the emission medium and emitting the resulting mixed liquid.

Printer device

A printing device according to the present invention assures stable mixing and ejecting operations without provision of complicated mechanisms such as valves. The printing device includes an ejecting nozzle with a first discharge opening and a metering nozzle with a, second discharge opening, which are provided separately from each other to feed two kinds of fluids through the first and second discharge openings, respectively. The two kinds of fluids are mixed together to form a fluid mixture to be ejected toward a recording medium. A minimum distance d between the first and second discharge openings of the metering and ejecting nozzles is in the range of 0.ltoreq.d.ltoreq.5.sqroot. (S1) where S1 stands for an opening area of the first discharge opening of the ejecting nozzle.

Printer head cleaning device for ink jet printer

The present invention provides a print head capable of ejecting a fluid, containing at least ink, toward a printing medium for printing. The print head has an ink chamber for receiving the ink, a diluent chamber for receiving a diluent for diluting the ink, an ink orifice fluidly connected with the ink chamber for ejecting or oozing out a predetermined quantity of the ink, and a diluent orifice fluidly connected with the diluent chamber for ejecting or oozing out a predetermined quantity of diluent. The ink chamber and the diluent chamber are provided separately from each other and the ink orifice and diluent orifice are provided separately from each other. In addition, the present invention provides a process for making a print on a printing medium by using an ink ejected from a print head, the print head has an ink chamber and a diluent chamber. The process includes the steps of providing a pair of pressure-applying elements at positions corresponding to the ink chamber and the diluent chamber, impressing a quantity-determinative pulse to the pressure-applying element disposed at a position corresponding to the ink chamber, and impressing an ejecting pulse to the pressure-applying element disposed at a position corresponding to the diluent chamber.

Print head providing controlled mixing of ink and diluent on the surface

In the ink jet printer head and the ink jet printer of this invention, accurate gradation printing can be performed at a high speed. The ink 34 is introduced to be supplied from the ink tank to a quantified liquid chamber 8 of the quantified part 2 via a liquid supply channel 15. When voltage is applied to the piezoelectric element 11, it is distorted in the height direction. However, since the upper side is fixed to the piezo element support 5, the piezoelectric element 11 elongates in the downward direction. Therefore, the piston 12 is pressed down and the volume of the quantifying part liquid chamber 8 is reduced, so that the ink 34 is flowed out from the liquid flow channel 14 in the amount corresponding to the reduced volume, namely the quantified ink 34. This quantified ink 34 is mixed with the transparent solvent 35 discharged from the base 1.

Ink jet printer and printer head having means for quantifying liquids

Ink jet recording apparatus

Growing community of inventors

Tokyo, Japan

Toshiki Kagami