Abstract: A liquid ejection head includes a base plate and at least two device chips in which ejection ports for ejecting a liquid are formed and which are disposed on the base plate. At least one first reference mark is provided on the base plate. A second reference mark is provided on each of the device chips. At least one space is formed between adjacent device chips. The second reference marks and the first reference mark present in the space are disposed on an array axis along which the device chips are arrayed.

Abstract: A liquid ejection head includes a base plate and at least two device chips in which ejection ports for ejecting a liquid are formed and which are disposed on the base plate. At least one first reference mark is provided on the base plate. A second reference mark is provided on each of the device chips. At least one space is formed between adjacent device chips. The second reference marks and the first reference mark present in the space are disposed on an array axis along which the device chips are arrayed.

Abstract: A liquid ejection head includes a base plate and at least two device chips in which ejection ports for ejecting a liquid are formed and which are disposed on the base plate. At least one first reference mark is provided on the base plate. A second reference mark is provided on each of the device chips. At least one space is formed between adjacent device chips. The second reference marks and the first reference mark present in the space are disposed on an array axis along which the device chips are arrayed.

Abstract: A display apparatus (10) of the present invention which includes a display section (25) for displaying an image and which is operated by an operation terminal, includes an executing section (12) for executing an operation of the display apparatus; a remote-controller-light receiving section (20) that receives a signal containing identification information for identifying a user using the operation terminal, the signal being sent from the operation terminal; and a recording section (22) in which a plurality of sets of associated information are recorded, each of the plurality of sets of associated information being information in which identification information and setting information used for execution of the operation by the executing means are associated with each other, the executing means (12) (i) acquiring setting information corresponding to the identification information received by the remote-controller-light receiving section from among the plurality of sets of associated information recorded on the

Abstract: Carbon black of the present invention has a number average particle size of Feret's diameter of 5 to 300 nm and contains primary particles of 5% or more on a number basis.

Abstract: Carbon black, comprising particles having a number average particle size of Feret's diameter of 2 to 100 nm and an average roundness of 100 to 130.

Abstract: Carbon black, comprising particles having a number average particle size of Feret's diameter of 2 to 100 nm and an average roundness of 100 to 130.

Abstract: Carbon black of the present invention has a number average particle size of Feret's diameter of 5 to 300 nm and a CV value of the number average particle size of Feret's diameter of 5 to 30.

Abstract: The present invention provides to a composition, a composition for coloring and a conductive composition, each of which contains new carbon black having a specific number average particle size of Feret's diameter. The present invention relates to a composition containing carbon black, in which a number average particle size of Feret's diameter is 5 to 300 nm and primary particles are contained at 5% or more on a number basis. The composition of the present invention is uniform in coloring and conductivity and makes it possible to be uniform in coloring and conductivity of final forms using those compositions.

Abstract: A resin material molding method includes: equalizing flow speeds of a first resin material and a second rein material at a confluence of the resin materials when the first material and the second resin material are fed into a common cavity through different inlets, the cavity including a first mold and a second mold.

Abstract: In order to produce a reproduction of an object such as a human face, a three-dimensional form of the object is measured with a three-dimensional measuring device, and the measured form is displayed. After a user approves the displayed form, a material is worked according to the measured form to work a reproduction of the object. If the user cancels the displayed form, the form is measured again and the measured form is displayed. Characteristics of the measured form are extracted, and an appropriate material is selected among a plurality of materials. On the other hand, the data of the measured form are converted to work data with reference to the size and the quality of a product to be worked which have been stored in a database. Preferably, the data are compressed in the depth direction in order to shorten the working time. Then, the material is worked in a series of processes from the form input to the working in a simple way, and the user can obtained a desired three-dimensional reproduction.

Abstract: A resin polygonal mirror having reflective facets each of which is made by injecting resin from a plurality of pin point gates or a single film gate. A core of the polygonal mirror is made of a different resin from the resin which is the material of the reflective facets. A mold of the polygonal mirror has side segments which are divided by parting lines extended from corners of the reflective facets.

Abstract: A resin polygonal mirror having reflective facets each of which is made by injecting resin from a plurality of pin point gates or a single film gate. A core of the polygonal mirror is made of a different resin from the resin which is the material of the reflective facets. A mold of the polygonal mirror has side segments which are divided by parting lines extended from corners of the reflective facets.

Abstract: A coupling structure and a method of coupling resin structures wherein a first member is coupled with a thermoplastic second member through a coupling force produced by constricting the volume of the resin during molding and/or the generation of an undercut structure. The undercut structure results from the deformation of a projection member caused by the flow pressure and temperature of the resin. A recess is provided in one of the members. The recess is indented in the laying direction. On the other member, a projection is provided which enters the recess. The coupling of the two members is therefore simple and does not require the use of a subsidiary material. Additionally, when an undercut structure is formed, extremely strong coupling is obtained. Since the undercut is formed by deformation of the projection, no undercut structure is required to be formed on the die, so that no extra cost or burden has to be forced on the die.

Abstract: A developing device having a developing sleeve loosely mounted on the peripheral surface of a cylindrical developing roller. Both end portions of the developing sleeve are pressed against the developing roller by a pair of guide pads so that a part of the developing sleeve keeps contacting the developing roller. The force applied by the the pair of the guide pads to the developing sleeve is in such an extent that driving force of the developing roller is transmitted to the developing sleeve in the portion in which the developing sleeve contacts the developing roller and that the developing sleeve is allowed to rotate in correspondence with the rotation of the developing roller. A blade member for forming a thin layer of toner on the developing sleeve is in contact with the peripheral surface of the developing sleeve. Fine irregularities are formed on the peripheral surface of the developing sleeve so as to hold toners adhered thereto.