Abstract: A belt unit includes a belt that is endless, a plurality of stretching rollers, a pair of side frames and one or more shafts. The side frames are each provided with bearing holes that rotatably support opposite end parts of the stretching rollers, and positioning holes into which opposite end parts of the shafts are inserted. The shafts each have formed therein a first engagement groove that engages with a first holding jig. The stretching rollers each have formed therein a second engagement groove that engages with a second holding jig. When the first engagement groove is in engagement with the first holding jig, the shafts are arranged opposite the positioning holes corresponding thereto, and have a phase thereof restricted in a circumferential direction thereof. When the second engagement groove is in engagement with the second holding jig, the stretching rollers are arranged opposite the bearing holes corresponding thereto.

Abstract: A positive electrode active material with high charge and discharge capacity is provided. A novel positive electrode active material is provided. The positive electrode active material is manufactured in such a manner that after a cobalt compound (also referred to as a precursor) containing nickel, cobalt, and manganese is obtained by a coprecipitation method, a mixture obtained by mixing a lithium compound and the cobalt compound is heated at a first temperature; after the mixture is ground or crushed, heating at a second temperature that is a temperature higher than the first temperature is further performed; and after an additive is mixed, third heat treatment is performed. The first temperature is higher than or equal to 400° C. and lower than or equal to 700° C. The second temperature is higher than 700° C. and lower than or equal to 1050° C.

Abstract: A novel ionic liquid is provided. A highly safe secondary battery with high charge and discharge capacity is provided. The ionic liquid includes a cation represented by General Formula (G1) and an anion represented by Structural Formula (200). In the formula, X1 to X3 each independently represent any one of fluorine, chlorine, bromine, and iodine. One of X1 to X3 may be hydrogen. In addition, n and m each independently represent 0 to 5. Furthermore, a secondary battery including the above-described ionic liquid is provided.

Abstract: A novel method for forming a positive electrode active material is provided. The method for forming a positive electrode active material includes causing a reaction between a cobalt aqueous solution and an alkaline aqueous solution to form a cobalt compound; mixing the cobalt compound and a lithium compound and performing a first heat treatment to form a first composite oxide; mixing the first composite oxide and a compound containing a first additive element and performing a second heat treatment to form a second composite oxide; and mixing the second composite oxide and a compound containing a second additive element and performing a third heat treatment. The first heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1100° C. The second heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1000° C.

Abstract: Provided is a light-emitting device with high emission efficiency. Provided is a light-emitting device including an anode, a cathode, and an EL layer positioned therebetween; the EL layer includes a light-emitting layer, a first layer, and a second layer; the first layer is positioned between the anode and the light-emitting layer; the first layer is in contact with the second layer; the second layer contains a monoamine compound having an arylamine structure; a first group, a second group, and a third group are bonded to a nitrogen atom included in the amine in the monoamine compound; the first group is a group including a carbazole structure; the second group is a group including a dibenzofuran structure or a dibenzothiophene structure; the third group includes an aromatic hydrocarbon structure having 6 to 18 carbon atoms or a heteroaromatic hydrocarbon structure having 4 to 26 carbon atoms; and a refractive index of the first layer is lower than a refractive index of the light-emitting layer.

Abstract: A novel method for manufacturing a positive electrode active material is provided. In the method, an acid solution is formed by mixing an aqueous solution containing nickel, cobalt, and manganese with an aqueous solution containing a first additive element; a composite hydroxide containing nickel, cobalt, manganese, and the first additive element is formed by a reaction between the acid solution and an alkaline solution; the composite hydroxide and a lithium source are mixed and heated (first heating) to form a composite oxide; and the composite oxide and a second additive element source are mixed and heated (second heating). The first additive element is at least one of gallium, boron, aluminum, indium, magnesium, and fluorine, and the second additive element is at least one of calcium, gallium, boron, aluminum, indium, magnesium, and fluorine.

Abstract: To provide a positive electrode active material with high charge and discharge capacity, or a novel positive electrode active material. The positive electrode active material is formed in the following manner: a cobalt compound (also referred to as a precursor) containing nickel, cobalt, and manganese is obtained by a coprecipitation method; a mixture obtained by mixing a lithium compound, the cobalt compound, and an additive is heated at first heating temperature; and the heated mixture is ground or crushed and further heated at second heating temperature that is higher than the first heating temperature. The first heating temperature is higher than or equal to 400° C. and lower than or equal to 700° C. The second heating temperature is higher than 700° C. and lower than or equal to 1050° C.

Abstract: A polymer composition used for a thermally conductive, electrically insulating component is provided. The polymer composition contains three ingredients, (a) a polymer, (b) a coated graphite particle, (c) an inorganic filler, and optionally (d) additional ingredients. Preferably, the graphite particle is partially coated with magnesium carbonate. An article formed from the polymer composition may achieve higher thermal conductivity and excellent volume resistivity as well as high flowability that can lead to good moldability. The polymer composition may also show low density which can contribute to light-weighting of various applications.

Abstract: A light-emitting device with high emission efficiency and low driving voltage is provided. A light-emitting apparatus, an electronic device, and a lighting device with low power consumption are provided. The following organic compound is provided: the organic compound has an arylamine structure; and when the organic compound is deposited to be a film, the ordinary refractive index of the deposited film with respect to light with a wavelength of 458 nm is greater than or equal to 1.50 and less than or equal to 1.75, the birefringence ?n of the deposited film with respect to light with a wavelength of 458 nm is greater than or equal to 0 and less than or equal to 0.008, or the alignment order parameter of the deposited film with respect to light with a wavelength corresponding to the longest wavelength where an absorption peak appears in the absorption spectrum is greater than or equal to ?0.07 and less than or equal to 0.00.

Abstract: According to one embodiment, a graphics processor includes a decode request registering module which registers decode requests for image data items sequentially, a decode processing module which decodes and holds the image data items in a registration order of the decode requests, and a drawing module which acquires a decode result from the decode processing module according to a drawing request issued for each image data item and drawing the decode result. The registering module notifies an external device that a waiting state for the drawing request for the image data item has been established, in response to registration of the decode request for the image data item to ensure that the preparation of the drawing request for the image data item is performed in parallel with the decoding of the image data item.

Abstract: In a video display control method of the embodiment, a background image of a moving picture or a still picture is provided on an image display screen, and an on-screen display image is displayed on the screen including the background image. Then, when a first predetermined time period or more has elapsed without any apparatus operation since the on-screen display image is displayed, the on-screen display image is cleared. When a second predetermined time period or more has elapsed without any apparatus operation since the background image is changed to a still, screen-save processing is executed.

Abstract: According to one embodiment, a video reproduction section reproduces content using a reproduction module. A version upgrade management section reads a content ID of content recorded on an optical disc and determines whether or not update of the reproduction module is required based upon comparison between the content ID and a version upgrade list stored in a storage section. When update of the reproduction module is required, the version upgrade management section acquires another reproduction module from a server apparatus via a network and updates the reproduction module in the reproduction section using another reproduction module. The video reproduction section reproduces the content recorded on the optical disc using the updated reproduction module.

Abstract: According to one embodiment, a graphics processor includes a decode request registering module which registers decode requests for image data items sequentially, a decode processing module which decodes and holds the image data items in a registration order of the decode requests, and a drawing module which acquires a decode result from the decode processing module according to a drawing request issued for each image data item and drawing the decode result. The registering module notifies an external device that a waiting state for the drawing request for the image data item has been established, in response to registration of the decode request for the image data item to ensure that the preparation of the drawing request for the image data item is performed in parallel with the decoding of the image data item.