Abstract: A printing apparatus comprises a first roller for conveying sheets, a first motor for driving the first roller, a second roller for conveying sheets, a second motor for driving the second roller, and a conveyance controller that controls conveyance to be able to execute a first conveyance operation for conveying sheets such that the trailing edge of a preceding sheet and the leading edge of a succeeding sheet overlap, and a second conveyance operation for conveying sheets by arranging a distance between the trailing edge of the preceding sheet and the leading edge of the succeeding sheet. The conveyance controller, based on information indicating whether the second motor is in a temperature rising state, controls whether to execute the first conveyance operation or to execute the second conveyance operation.

Abstract: A printing apparatus comprises a first roller for conveying sheets, a first motor for driving the first roller, a second roller for conveying sheets, and a second motor for driving the second roller, and a conveyance controller that controls conveyance to be able to execute a first conveyance operation for conveying sheets such that the trailing edge of a preceding sheet and the leading edge of a succeeding sheet overlap, and a second conveyance operation for conveying sheets by arranging a distance between the trailing edge of the preceding sheet and the leading edge of the succeeding sheet, wherein the conveyance controller, based on information indicating that the second motor is in a temperature rising state, controls whether to execute the first conveyance operation or to execute the second conveyance operation.

Abstract: A printing apparatus includes a print unit configured to perform printing on the print medium held by a holding unit, the holding unit being capable of holding multiple types of print medium, a detecting unit capable of detecting the print medium and the holding unit, and a movement unit capable of relatively moving the detecting unit and the holding unit in a first direction and in a second direction intersecting the first direction. In addition, a control unit controls the detecting unit and the movement unit in a case where a first print medium is held by the holding unit, to obtain position information of the first print medium before the print unit performs printing and, in a case where a second print medium different from the first print medium is held by the holding unit, not to obtain position information of the second print medium.

Abstract: Provided is a technique that makes it possible to obtain positional information for determining a print position depending on the type of print medium. A determining unit determines a process for obtaining information on the position of the print medium by using a detecting unit, depending on the type of the print medium. An obtaining unit obtains the information on the position of the print medium by changing the relative position of the detecting unit with respect to the holding unit holding the print medium, based on the process determined by the determining unit. Then, a setting unit determines a print position for the print medium based on the information on the position of the print medium.

Abstract: A sheet feeding apparatus includes an endless attraction member (200) attracting a sheet and rotating, and the attraction member (200) includes a plurality of electrode pattern areas. Each of the electrode pattern areas includes first and second electrodes (510 and 511) supplied the voltages from a power feed portion respectively. The electrode pattern areas are arrayed in the circumferential direction in such a manner that the electrode pattern areas are electrically insulated each other, and each circumferential direction length of the electrode pattern areas is set shorter than a circumferential direction length, between the power feed portion and the discharge portion, of the attraction member.

Abstract: A sheet feeding apparatus includes a first and second electrode elements arranged on an attracting member, including a plurality of attracting force generation electrodes and power feeding electrodes corresponding to the respective attracting force generation electrodes. The attracting force generation electrodes of the first and second electrode elements are alternately arranged. Further, the sheet feeding apparatus includes a power feeding brush arranged at a position different from an attracting position and capable of supplying voltages to the electrode elements, respectively, and a neutralization roller pair arranged at a position different from the attracting position and the power feeding brush and configured to be brought into contact with the electrode elements to remove a residual charge on the attracting member.

Abstract: A sheet feeding apparatus includes a controller for shifting a sheet attractor from a stand-by state in which the attractor is away from a sheet accommodated in a sheet stacking device to an attraction state in which the attractor is elastically deformed to surface-contact with the sheet stacked on the stacker to electrostatically attract the sheet, to a separating state for separating the sheet from a lower sheet by lifting a downstream end of the sheet with respect to the feeding direction, and to a spaced state in which the attractor spaces the attracted sheet from the lower sheet, the controller changing a slackness of the attractor in the separating state on the basis of a stiffness information of the sheet.

Abstract: Provided is a sheet feeding device and an image forming apparatus capable of performing sheet feeding by electrostatic adsorption at a low noise with a simple configuration. A first outer nip conveying roller 201b and a second outer nip conveying roller 202b that nip an adsorbing member 200 supported in a state an inside is loose by a first inner nip conveying roller 201a and a second inner nip conveying roller 202b are provided.

Abstract: Provided are a sheet feeding device and an image forming apparatus which can separately feed a sheet with safety without causing the length of an adsorption member to be increased. One end of a flexible adsorption member (29) is fixed to a holding member (24) which is disposed on the upper side of a storing unit to store the sheet and rotated in a sheet feeding direction. Then, when the holding member (24) is rotated, the rigidity of a second region (29b) of the adsorption member (29) is set to be lower than that of a first region (29a) of the adsorption member (29) which comes into surface contact with the sheet stored in the storing unit and adsorbs the sheet by an adsorbing force by static electricity.

Abstract: Provided are a sheet feeding device and an image forming apparatus which can feed a sheet by an electrostatic adsorption with a simple configuration and with low noises. One end of a flexible adsorption member (29) is fixed to a holding member (24) rotating in a sheet feeding direction, and comes into surface contact with a sheet (P) stored in a sheet feeding cassette (20) while being elastically deformed when the holding member (24) is rotated, and adsorbs the sheet (P) by an adsorbing force by static electricity. Then, the sheet (P1) adsorbed to the adsorption member (29) is delivered to a registration roller (15) while winding up the adsorption member (29), and then the holding member (24) is stopped at a position where the adsorption member (29) is separated from the sheet.

Abstract: Provided is a sheet feeding device and an image forming apparatus capable of performing sheet feeding by electrostatic adsorption at a low noise with a simple configuration. An adsorbing member 400 is arranged to be rotatable in synchronization with rotation of one driving roller (rotary member) 401, and while the driving roller 401 is performing one rotation, the adsorbing member 400 adsorbs and feeds a sheet from a standby position, and then the adsorbing member 400 returns to the standby position again.

Abstract: Provided is a sheet feeding device and an image forming apparatus capable of performing sheet feeding by electrostatic adsorption at a low noise with a simple configuration. An adsorbing member 410 includes a straight line portion 410m and a curved portion 410n, and the adsorbing member 410 adsorbs a sheet through the curved portion 410n and conveys the sheet upward through the straight line portion 410m.

Abstract: Provided is a sheet feeding device and an image forming apparatus capable of performing sheet feeding by electrostatic adsorption at a low noise with a simple configuration. A first outer nip conveying roller 201b and a second outer nip conveying roller 202b that nip an adsorbing member 200 supported in a state an inside is loose by a first inner nip conveying roller 201a and a second inner nip conveying roller 202b are provided.

Abstract: A belt driving device includes first and second steering rollers to stretch an endless belt, first and second pivoting mechanisms, and first and second detecting members to detect a position of the belt A first setting portion sets first and second pivoting instruction values through which the first and second steering rollers are pivoted in the same direction, and a second setting portion sets third and fourth pivoting instruction values through which the first and second steering rollers are pivoted in the opposite directions. A controller pivots the first steering roller by the first pivoting mechanism on the basis of an addition value of the first pivoting instruction value and the third pivoting instruction value, and pivots the second steering roller by the second pivoting mechanism on the basis of an addition value of the second pivoting instruction value and the fourth pivoting instruction value.

Abstract: An image forming apparatus capable of accurately forming an image in a predetermined position on a sheet. An image forming unit forms a toner image on a drum. The toner image is transferred onto a belt. A motor drives the belt to convey the toner image to a transfer position where the toner image is transferred onto a sheet. An image position-detecting section detects that a patch image indicating the position of the toner image on the belt has reached a detection position upstream of the transfer position in an image conveying direction. A sheet position-detecting section detects that the leading edge of the sheet has reached a detection position upstream of the transfer position in a sheet conveying direction. An image speed-setting section controls the conveying speed of the belt based on timings of detection by the respective image position-detecting and sheet position-detecting sections.

Abstract: A belt conveyance apparatus includes an endless belt and a plurality of rollers around which the belt is stretched, and receives an image on the endless belt at a predetermined image receiving surface in a conveyance direction of the belt. At least one of the plurality of rollers is a steering roller arranged on a downstream side of an image receiving position and capable of changing an arrangement angle thereof with respect to the belt by being tilted. If an area of the belt between the steering roller and the image receiving position in an opposite direction of the conveyance direction of the belt is assumed to be a predetermined area, a tilt axis of the steering roller is arranged on the predetermined area side of a rotational axis of the steering roller when viewing in the tilt axis direction.

Abstract: A belt driving device for driving an endless belt includes rollers configured to stretch the belt, the rollers including first and second steering rollers being provided in an upstream side and a downstream side of an image receiving surface of the belt for receiving a image, respectively, and being configured to change a position of the belt in a direction crossing with a moving direction of the belt by inclining respectively; a pivoting unit configured to pivot the first and second steering rollers, respectively; a detecting unit for detecting an inclination amount of the belt with respect to a feeding direction of the belt; and a controller configured to pivot the first and second steering rollers in the same direction by the pivoting unit on the basis of a result of detection of the detecting unit.

Abstract: A biochemical reaction cassette having a structure for uniformizing a liquid flow in a reaction chamber with a simple additional arrangement is provided. A fluid resistive section is arranged in a channel that is constructed to include an injection port, a reaction chamber, and a discharge port. The fluid resistive section decreases the cross-sectional area of the channel to decrease the fluid resistance at ends in the width direction of the fluid resistive section and at positions remote from the injection port and the discharge port, where the flow rate is decreased.

Abstract: An image forming apparatus capable of accurately forming an image in a predetermined position on a sheet. An image forming unit forms a toner image on a drum. The toner image is transferred onto a belt. A motor drives the belt to convey the toner image to a transfer position where the toner image is transferred onto a sheet. An image position-detecting section detects that a patch image indicating the position of the toner image on the belt has reached a detection position upstream of the transfer position in an image conveying direction. A sheet position-detecting section detects that the leading edge of the sheet has reached a detection position upstream of the transfer position in a sheet conveying direction. An image speed-setting section controls the conveying speed of the belt based on timings of detection by the respective image position-detecting and sheet position-detecting sections.

Abstract: The width of reaction wells and detection wells used for the same sample in a nozzle line direction is made to fall within an area smaller than the pitches of nozzle holding parts, so as to minimize a moving range and enable a pipette action for preventing contamination.