Abstract: An anti-slip device for preventing an installed image forming device from slipping on an installation surface. The anti-slip device includes an operation portion that can be moved by a user, a movable portion, and an anti-slip member. The movable portion has a bottom surface and moves in conjunction with movement of the operation portion to move from a first position to a second position above the first position. The anti-slip member is provided on the bottom surface of the movable portion and comes into contact with the installation surface when the movable portion is in the first position and separates from the installation surface when the movable portion is raised from the first position to the second position.

Abstract: A conveyance apparatus that conveys a sheet by passing the sheet through a nip formed between a first conveyance roller and a second conveyance roller contacting each other. The conveyance apparatus includes a first gate member, a second gate member, and a third gate member into which a rotational shaft of the first conveyance roller is loosely inserted, the first and second gate members being disposed at a predefined interval, the third gate member being disposed between the first and second gate members. The first, second, and third gate members each include a portion protruding radially outwards, and the protruding portions are positioned on a conveyance path during no sheet conveyance, the protruding portion of the third gate member being positioned upstream of the protruding portions of the first and second gate members in a conveyance direction.

Abstract: In a paper cassette, a guide slides on a tray to place a sheet at a proper position. A lift mechanism uses a restoring force of an elastic member to push up the tray and make the sheet on the tray approach a pickup roller. When the paper cassette is pushed by a user from an opened position, which is out of the housing of a printer, to a closed position, which is in the housing, an adjuster mechanism mechanically converts a force of the user pushing the paper cassette to the restoring force of the elastic member from a time the guide reaches a specific point on a trajectory along which the guide travels together with the paper cassette, thus adjusting the strength of the restoring force continuously to a distance by which the guide overruns the specific point.

Abstract: In a paper cassette, a guide slides on a tray to place a sheet at a proper position. A lift mechanism uses a restoring force of an elastic member to push up the tray and make the sheet on the tray approach a pickup roller. When the paper cassette is pushed by a user from an opened position, which is out of the housing of a printer, to a closed position, which is in the housing, an adjuster mechanism mechanically converts a force of the user pushing the paper cassette to the restoring force of the elastic member from a time the guide reaches a specific point on a trajectory along which the guide travels together with the paper cassette, thus adjusting the strength of the restoring force continuously to a distance by which the guide overruns the specific point.

Abstract: A sheet material feeding device includes: a housing; a cassette configured to internally house a sheet material, and capable of being pulled out of the housing and housed into the housing; a rear-end regulating member provided inside the cassette and configured to regulate a position of an upstream end of the sheet material in a sheet material feeding direction; a rear-end displacing member supported by the rear-end regulating member and configured to swing along the sheet material feeding direction; a sliding member provided for the cassette, having an engagement part to be engaged with the rear-end displacing member, and configured to slide toward a downstream side in the sheet material feeding direction to displace the rear-end displacing member toward the downstream side in the sheet material feeding direction; and a first energizing member configured to energize the sliding member toward an upstream side in the sheet material feeding direction.

Abstract: A sheet material feeding device includes: a housing; a cassette configured to internally house a sheet material, and capable of being pulled out of the housing and housed into the housing; a rear-end regulating member provided inside the cassette and configured to regulate a position of an upstream end of the sheet material in a sheet material feeding direction; a rear-end displacing member supported by the rear-end regulating member and configured to swing along the sheet material feeding direction; a sliding member provided for the cassette, having an engagement part to be engaged with the rear-end displacing member, and configured to slide toward a downstream side in the sheet material feeding direction to displace the rear-end displacing member toward the downstream side in the sheet material feeding direction; and a first energizing member configured to energize the sliding member toward an upstream side in the sheet material feeding direction.

Abstract: A sheet feed cassette having: a main body to be set in a body of an image forming apparatus; a first press-up member configured to support print media stacked thereon; a first elastic member configured to apply an elastic force to make the first press-up member press up the print media; a second press-up member; a second elastic member configured to apply an elastic force to make the second press-up member press up the first press-up member or the print media; an adjusting mechanism configured to adjust the force of the second press-up member to press up the first press-up member or the print media in accordance with a size of the print media; and a regulatory mechanism configured to prevent the second press-up member from pressing up the first press-up member or the print media when the main body is detached from the body of the image forming apparatus.

Abstract: A sheet feed cassette having: a main body to be set in a body of an image forming apparatus; a first press-up member configured to support print media stacked thereon; a first elastic member configured to apply an elastic force to make the first press-up member press up the print media; a second press-up member; a second elastic member configured to apply an elastic force to make the second press-up member press up the first press-up member or the print media; an adjusting mechanism configured to adjust the force of the second press-up member to press up the first press-up member or the print media in accordance with a size of the print media; and a regulatory mechanism configured to prevent the second press-up member from pressing up the first press-up member or the print media when the main body is detached from the body of the image forming apparatus.