Abstract: To provide a technique for suppressing brightness non-uniformity of an area illuminated by a light source and also suppressing a decline in contrast between areas caused by incidence of a luminous flux of the area to another area. Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

Abstract: An object is to promote a reduction in thickness of a light guide plate and suppress brightness non-uniformity of the light guide plate. A light guide plate, including: a light exit surface from which light is emitted; an opposite surface on an opposite side of the light exit surface; a depressed portion provided on the opposite surface; and a plurality of scattering portions which are provided on the light exit surface, the opposite surface, and a bottom surface of the depressed portion and which refract and scatter light, wherein the depressed portion has a tapered surface which spreads from the bottom surface of the depressed portion toward an opening of the depressed portion.

Abstract: To provide a technique for suppressing brightness non-uniformity of an area illuminated by a light source and also suppressing a decline in contrast between areas caused by incidence of a luminous flux of the area to another area. Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

Abstract: A printing device includes: a main body including an accommodating portion configured to accommodate a printing medium; a cover displaceable between an open position where the accommodation portion is opened and a closed position where the accommodation portion is closed; a platen roller attached to the cover and rotatably supported by the cover; a peeling roller attached to the cover and supported so as to be rotatable about an axis parallel to a longitudinal direction of the platen roller; and a switching mechanism attached to the cover and configured to switch the peeling roller between a contact position where the peeling roller comes into contact with the platen roller and a non-contact position where the peeling roller is away from the platen roller in conjunction with displacement of the cover.

Abstract: An ink jet textile printing ink contains 5% by mass to 20% by mass of a water-soluble dye, water, a water-soluble organic solvent, and active carbon particles. The active carbon particles include particles having a particle size of 50 nm to 1000 nm, and the active carbon particles having the particle size of 50 nm to 1000 nm are contained in a proportion of 500 to 300000 particles per milliliter. Also, the active carbon particles may include particles having a particle size of 50 nm to 200 nm, and the active carbon particles having a particle size of 50 nm to 200 nm may be contained in a proportion of 2000 to 30000 particles per milliliter. The active carbon particles may have an average particle size in the range of 100 nm to 600 nm.

Abstract: A composition for aqueous ink jet contains a specific dye which is one or more coloring materials selected from the group consisting of C. I. Acid Black 172 and C. I. Acid Black 194, and a specific aromatic compound which is at least one compound selected from the group consisting of compounds represented by formulae (1) to (4) below. The content of the specific aromatic compound relative to 100 parts by mass of the specific dye is 0.2 parts by mass or more and 50 parts by mass or less.

Abstract: A composition for aqueous ink contains water and a coloring material, wherein the calcium ion content x (ppm) and the oxalate ion content y (ppm) in the composition for aqueous ink jet satisfy the relation of y?3491.8x?3.386.

Abstract: To provide a technique for suppressing brightness non-uniformity of an area illuminated by a light source and also suppressing a decline in contrast between areas caused by incidence of a luminous flux of the area to another area. Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

Abstract: An object is to promote a reduction in thickness of a light guide plate and suppress brightness non-uniformity of the light guide plate. A light guide plate, including: a light exit surface from which light is emitted; an opposite surface on an opposite side of the light exit surface; a depressed portion provided on the opposite surface; and a plurality of scattering portions which are provided on the light exit surface, the opposite surface, and a bottom surface of the depressed portion and which refract and scatter light, wherein the depressed portion has a tapered surface which spreads from the bottom surface of the depressed portion toward an opening of the depressed portion.

Abstract: Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

Abstract: A printing apparatus having a body, a cover, a pair of supporting parts, a locking member, and an engaging portion, is provided. At least one of the pair of supporting parts is a movable supporting part. The locking member arranged on the movable supporting part is movable between a locked position and an unlocked position. The engaging portion arranged in a container compartment engageable with the locking member being at the locked position. The locking member at the unlocked position when the cover is open is separated from the engaging portion. In a process where the cover is moved to be closed, a protrusive portion in the cover contacts to be pressed against a contact portion in the locking member, causing the locking member to shift from the unlocked position to the locked position to be engaged with the engaging portion.

Abstract: An object is to promote a reduction in thickness of a light guide plate and suppress brightness non-uniformity of the light guide plate. A light guide plate, including: a light exit surface from which light is emitted; an opposite surface on an opposite side of the light exit surface; a depressed portion provided on the opposite surface; and a plurality of scattering portions which are provided on the light exit surface, the opposite surface, and a bottom surface of the depressed portion and which refract and scatter light, wherein the depressed portion has a tapered surface which spreads from the bottom surface of the depressed portion toward an opening of the depressed portion.

Abstract: An ink composition includes a first component which is a hydrophilic solvent, a second component which is a hydrophobic solvent, a third component which is an amphiphilic solvent, and a fourth component which includes a solute or a dispersing element, and when the third component evaporates, the ink composition is separated into a phase which mainly includes the first component and a phase which mainly includes the second component.

Abstract: An ink jet textile printing ink contains 5% by mass to 20% by mass of a water-soluble dye, water, a water-soluble organic solvent, and active carbon particles. The active carbon particles include particles having a particle size of 50 nm to 1000 nm, and the active carbon particles having the particle size of 50 nm to 1000 nm are contained in a proportion of 500 to 300000 particles per milliliter. Also, the active carbon particles may include particles having a particle size of 50 nm to 200 nm, and the active carbon particles having a particle size of 50 nm to 200 nm may be contained in a proportion of 2000 to 30000 particles per milliliter. The active carbon particles may have an average particle size in the range of 100 nm to 600 nm.

Abstract: Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

Abstract: An object is to promote a reduction in thickness of a light guide plate and suppress brightness non-uniformity of the light guide plate. A light guide plate, including: a light exit surface from which light is emitted; an opposite surface on an opposite side of the light exit surface; a depressed portion provided on the opposite surface; and a plurality of scattering portions which are provided on the light exit surface, the opposite surface, and a bottom surface of the depressed portion and which refract and scatter light, wherein the depressed portion has a tapered surface which spreads from the bottom surface of the depressed portion toward an opening of the depressed portion.

Abstract: To provide a film-forming ink and a film formation method, capable of making the dimensional accuracy of a film to be formed excellent by increasing the apparent liquid droplet amount of a film-forming ink to be supplied as a liquid droplet into an opening part included in a partition wall, and also to provide a device with a film and an electronic apparatus, each of which has a film formed using the film formation method. A film-forming ink of the invention includes a film-forming material and a liquid medium in which the film-forming material is dissolved or dispersed, wherein the liquid medium contains a first component which has a boiling point at an atmospheric pressure of 200° C. or higher and a second component which has a boiling point at an atmospheric pressure lower than the first component.

Abstract: A film-forming ink includes a film-forming material and a liquid medium in which the film-forming material is dissolved or dispersed. The liquid medium contains a first component which has a viscosity of less than 20 cp and a second component which has a boiling point at an atmospheric pressure within a range of ±30° C. relative to the boiling point at an atmospheric pressure of the first component and has a viscosity of 20 cp or more, and the second component is contained in an amount of 20 parts by weight or more and 500 parts by weight or less with respect to 100 parts by weight of the first component.

Abstract: There is provided a battery charger configured to charge a battery including a battery terminal. The battery charger includes a receiving portion in a form of a recess, and a charging terminal provided in the receiving portion. The battery is attachable to and detachable from the receiving portion. The receiving portion includes a holding portion configured to selectively hold the battery in the receiving portion at one of a first posture and a second posture different from the first posture. When the battery is in the first posture, the battery terminal is in contact with the charging terminal to allow the battery to be charged. When the battery is in the second posture, the battery terminal is separated from the charging terminal.

Abstract: A printing apparatus having a body, a cover, a pair of supporting parts, a locking member, and an engaging portion, is provided. At least one of the pair of supporting parts is a movable supporting part. The locking member arranged on the movable supporting part is movable between a locked position and an unlocked position. The engaging portion arranged in a container compartment engageable with the locking member being at the locked position. The locking member at the unlocked position when the cover is open is separated from the engaging portion. In a process where the cover is moved to be closed, a protrusive portion in the cover contacts to be pressed against a contact portion in the locking member, causing the locking member to shift from the unlocked position to the locked position to be engaged with the engaging portion.