Abstract: Image display apparatus includes liquid crystal cell, flat plate-shaped back frame, light guide plate, and a pair of support mechanisms. The pair of support mechanisms are fixed to back frame in positions at which light guide plate is clamped at both sides that intersect a first axis (X-axis). The pair of support mechanisms each includes movable component that supports light guide plate, body component that movably retains movable component, and elastic member that pushes movable component toward opposite support mechanism. Protrusion is disposed on movable component, and engagement section with which protrusion engages is disposed on light guide plate. Engagement section includes tab that is formed outwardly on an end surface of light guide plate, and notch disposed on tab and engages with protrusion.

Abstract: An image-forming apparatus includes a photosensitive drum, a developing roller, a collecting roller, a belt, a cleaner, and a controller. In response to receiving a signal, the controller performs a process staring with a first process and ending with a second process. The controller rotates the developing roller at a contact position at a first speed in the first process. The controller causes the collecting roller to move residual toner to the belt to allow the cleaner to clean the belt while the developing roller is separated from the photosensitive drum in the second process. The process further includes: (a) causing the developing roller to halt rotating while maintaining the developing roller at the contact position; and (b) causing the developing roller halted in the (a) causing to start rotating at a second speed lower than the first speed while maintaining the developing roller at the contact position.

Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.

Abstract: Image display apparatus includes liquid crystal cell, flat plate-shaped back frame, light guide plate, and a pair of support mechanisms. The pair of support mechanisms are fixed to back frame in positions at which light guide plate is clamped at both sides that intersect a first axis (X-axis). The pair of support mechanisms each includes movable component that supports light guide plate, body component that movably retains movable component, and elastic member that pushes movable component toward opposite support mechanism. Protrusion is disposed on movable component, and engagement section with which protrusion engages is disposed on light guide plate. Engagement section includes tab that is formed outwardly on an end surface of light guide plate, and notch disposed on tab and engages with protrusion.

Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.

Abstract: An image-forming apparatus includes a photosensitive drum, a developing roller, a collecting roller, a belt, a cleaner, and a controller. In response to receiving a signal, the controller performs a process staring with a first process and ending with a second process. The controller rotates the developing roller at a contact position at a first speed in the first process. The controller causes the collecting roller to move residual toner to the belt to allow the cleaner to clean the belt while the developing roller is separated from the photosensitive drum in the second process. The process further includes: (a) causing the developing roller to halt rotating while maintaining the developing roller at the contact position; and (b) causing the developing roller halted in the (a) causing to start rotating at a second speed lower than the first speed while maintaining the developing roller at the contact position.

Abstract: An object of the present invention is to provide a technique of suppressing precipitation of an anthocyanin pigment in a range other than the highly acidic range. The present invention provides an anthocyanin pigment preparation, comprising: an anthocyanin pigment; and an emulsifier, wherein the pH when the anthocyanin pigment preparation is diluted with water or dissolved in water so that a color value becomes 10 is more than 3.

Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.

Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.

Abstract: An object of the present invention is to provide a high-quality anthocyanin pigment composition more efficiently and at a lower cost than red cabbage pigment, which has not been achieved by the prior art. This invention provides the following anthocyanin pigment composition derived from a plant other than red cabbage, the composition having the following features (A), (B), and (C): (A) an aqueous solution containing the anthocyanin pigment composition and adjusted to a pH of 3 with a citrate buffer (pH: 3.0) has a maximum absorption wavelength in the range of 500 to 550 nm in the visible light region; (B) when a pigment-composition-containing aqueous solution containing the anthocyanin pigment composition, 0.2 mass % citric acid, 20 mass % ethanol, and water is prepared so as to have a color value E10%1cm of 10, 1 mL of the aqueous solution is sealed in a 20-mL vial, and the vial is stored at 50° C. for 5 days and further maintained at 40° C.

Abstract: A developing device includes a developer cartridge and a developing unit. The developer cartridge, in some instances, may include a shutter. This shutter may have a wall for closing a developer supply hole, and be movable, with respect to a developer cartridge casing, between an open position where the supply hole is opened by the wall and a closed position where the supply hole is closed by the wall. The shutter may further include a protrusion that is movable with respect to the wall of the shutter between a first position and a second position in an axial direction. The protrusion, in the first position, is engageable with a developing unit and, in the second position, would be disengaged from the developing unit.

Abstract: A developing device includes a developer cartridge and a developing unit. The developing unit includes a first guide and a second guide. The second is movable with respect to the developing frame between a first position where the second guide is in continuous with the first guide and a second position where a continuous state of the second guide with the first guide is interrupted. The developer cartridge includes a developer frame that accommodates a developer and a first guided member movable with respect to the developer frame. The first guide and the second guide at the first position guide the first guided member in the course of attaching the developer cartridge to the developing unit. When an attachment of the developer cartridge to the developing unit completes, the first guide receives the first guided member, and the second guide is at the second position.

Abstract: A developing roller configured to carry developer and extending in an axial direction includes: a hollow cylindrical rubber portion; and a shaft. The hollow cylindrical rubber portion has axial end faces. The shaft extends through the hollow cylindrical rubber portion and has a shaft portion positioned inward of the axial end faces of the hollow cylindrical rubber portion in the axial direction. The shaft portion has an axially middle portion and axial end portions positioned outward of the axially middle portion in the axial direction. The axially middle portion has an outer diameter smaller than that of each of the axial end portions.

Abstract: A developing device includes a developer cartridge and a developing unit. The developing unit includes a first guide and a second guide. The second is movable with respect to the developing frame between a first position where the second guide is in continuous with the first guide and a second position where a continuous state of the second guide with the first guide is interrupted. The developer cartridge includes a developer frame that accommodates a developer and a first guided member movable with respect to the developer frame. The first guide and the second guide at the first position guide the first guided member in the course of attaching the developer cartridge to the developing unit. When an attachment of the developer cartridge to the developing unit completes, the first guide receives the first guided member, and the second guide is at the second position.

Abstract: A developing device includes a developer cartridge and a developing unit. The developing unit includes a first guide and a second guide. The second is movable with respect to the developing frame between a first position where the second guide is in continuous with the first guide and a second position where a continuous state of the second guide with the first guide is interrupted. The developer cartridge includes a developer frame that accommodates a developer and a first guided member movable with respect to the developer frame. The first guide and the second guide at the first position guide the first guided member in the course of attaching the developer cartridge to the developing unit. When an attachment of the developer cartridge to the developing unit completes, the first guide receives the first guided member, and the second guide is at the second position.

Abstract: In a developing device, a developing roller has an outer peripheral surface movable in a moving direction upon rotation of the developing roller to transfer developing agent to a developing region having a width in an axial direction of the developing roller. A thickness regulation blade includes a rubber portion. The rubber portion provides a contact region in contact with the outer peripheral surface to provide a nip region relative to the developing roller. The contact region includes a first region; and a second region. The first region and the second region each extends in the axial direction by a length at least equal to or greater than the width of the developing region. The first region has a first surface roughness. The second region is positioned downstream of the first region in the moving direction and has a second surface roughness finer than the first surface roughness.

Abstract: A developing device includes a developer cartridge and a developing unit. The developing unit includes a first guide and a second guide. The second is movable with respect to the developing frame between a first position where the second guide is in continuous with the first guide and a second position where a continuous state of the second guide with the first guide is interrupted. The developer cartridge includes a developer frame that accommodates a developer and a first guided member movable with respect to the developer frame. The first guide and the second guide at the first position guide the first guided member in the course of attaching the developer cartridge to the developing unit. When an attachment of the developer cartridge to the developing unit completes, the first guide receives the first guided member, and the second guide is at the second position.

Abstract: A developing roller configured to carry developer and extending in an axial direction includes: a first rotation shaft; a second rotation shaft; a rubber body portion; a first cylindrical rubber portion; and a second cylindrical rubber portion. The body portion has a first side and a second side opposite to the first side in the axial direction. The first cylindrical rubber portion is disposed on the first side. The first rotation shaft is configured to be fitted with the first cylindrical rubber portion. The second cylindrical rubber portion is disposed on the second side. The second rotation shaft is configured to be fitted with the second cylindrical rubber portion. The rubber body portion is configured to be deformable more than the first cylindrical rubber portion and the second cylindrical rubber portion.

Abstract: A developing device includes a developer cartridge and a developing unit. The developing unit includes a first guide and a second guide. The second is movable with respect to the developing frame between a first position where the second guide is in continuous with the first guide and a second position where a continuous state of the second guide with the first guide is interrupted. The developer cartridge includes a developer frame that accommodates a developer and a first guided member movable with respect to the developer frame. The first guide and the second guide at the first position guide the first guided member in the course of attaching the developer cartridge to the developing unit. When an attachment of the developer cartridge to the developing unit completes, the first guide receives the first guided member, and the second guide is at the second position.

Abstract: An eyewear device which adjusts a transmitted light amount to a left eye and a right eye of a viewer to perform an assistance operation, which assists the viewer in viewing images so that the viewer stereoscopically perceives the images, comprising: a receiver configured to receive a synchronization signal in synchronization with display of the images; and a controller which analyzes a signal configuration of the synchronization signal after power supply is started for the assistance operation, and switches a control mode between a first control mode and a second control mode, which is different from the first control mode, based on an analysis result of the signal configuration.