摘要:
A sheet supplying apparatus, comprising a sheet accommodating portion which accommodates stacked recording sheets such that the recording sheets are supported by a support surface thereof; a sheet supplying arm which is supported by a frame such that the sheet supplying arm is pivotable about a first axis line, and which is biased toward the support surface of the sheet accommodating portion; a sheet supplying roller which is supported by an end portion of the sheet supplying arm such that the sheet supplying roller is rotatable about a second axis line parallel to the first axis line, and which is pressed on the uppermost recording sheet, so that when the sheet-supply roller is rotated, the uppermost recording sheet is supplied from the sheet accommodating portion; a receiving portion which is provided in the support surface and which is covered by the recording sheets and is opened when a trailing end of the last recording sheet passes over the receiving portion; and a moving device including a detecting portion which is supported by the recording sheets and which moves, when the trailing end of the last recording sheet passes over the receiving portion, into the receiving portion, and further including a detection-movement converting device which converts the movement of the detecting portion into the receiving portion, into the pivotal movement of the sheet supplying arm about the first axis line in a direction to move the sheet supplying roller away from the support surface of the sheet accommodating portion.
摘要:
A printer having a switch gear, first driven gear and second driven gear. The switch gear has a spur gear and is slidable along a direction that is parallel to a rotation axis of the spur gear. The first driven gear has a first spur gear and a cylinder fixed to the first spur gear. The cylinder is concentric with respect to the first spur gear and extends along the above direction. A hole is formed on the second driven gear. The hole is concentric with respect to a second spur gear and extends along the above direction. The second driven gear is rotatably mounted on the first driven gear by inserting the cylinder of the first driven gear into the hole of the second driven gear. The switch gear slides between a first position for engagement with the first driven gear and a second position for engagement with the second driven gear along the above direction. Since the driven gears are formed in this way, the position of the first driven gear in the above direction is not changed even when the second driven gear is not provided.
摘要:
An image recording apparatus includes; a recording unit which records on sheet-like recorded media; a cassette housing provided at a lower end of an apparatus casing and which houses a paper feeding cassette which accommodates the recorded media; a bottom plate provided on the lower surface of the cassette housing and which supports at least a part of a lower surface of the paper feeding cassette; an arm body which turns upward and downward according to a stacking amount of the recorded media in the paper feeding cassette; feed rollers arranged at an tip end of the arm body and which rotate while pressing the uppermost surface of the recorded media; and a restricting unit provided on the bottom plate in the apparatus casing and which avoids contact of the feed rollers with the bottom plate when the paper feeding cassette is pulled out of the apparatus casing.
摘要:
A supporting member is swingable about an imaginary swing axis that is parallel to an imaginary rotational axis of a feeding roller. The imaginary swing axis is located above a recording medium accommodated in a recording-medium accommodating section and is located upstream in a feeding direction of the recording medium with respect to the imaginary rotational axis. A first urging member is configured to apply an urging force to the support member in such a manner that the feeding roller contacts the recording medium accommodated in the recording-medium accommodating section. A second urging member is configured to urge an end of the supporting member in a direction that increases the urging force of the first urging member when an angle between a surface of the recording medium and a plane containing both the imaginary rotational axis and the imaginary swing axis is smaller than a predetermined angle.
摘要:
A feeder for an object to be conveyed has an arm having a base end and a distal end and swingable about the base end; a pair of support shafts rotatably provided on both sides of the distal end of the arm; a pair of rotary feeding members for feeding the objects to be conveyed piled in a holder while abutting on the objects to be conveyed, the pair of rotary feeding members being fitted on outer surfaces of the pair of support shafts, respectively; and a regulating unit for regulating orientations of the pair of rotary feeding members uniformly with respect to a direction in which the pair of rotary feeding members rotate, the regulating unit being provided in interfaces between the support shafts and the rotary feeding members.
摘要:
An image recording apparatus includes; a recording unit which records on sheet-like recorded media; a cassette housing provided at a lower end of an apparatus casing and which houses a paper feeding cassette which accommodates the recorded media; a bottom plate provided on the lower surface of the cassette housing and which supports at least a part of a lower surface of the paper feeding cassette; an arm body which turns upward and downward according to a stacking amount of the recorded media in the paper feeding cassette; feed rollers arranged at an tip end of the arm body and which rotate while pressing the uppermost surface of the recorded media; and a restricting unit provided on the bottom plate in the apparatus casing and which avoids contact of the feed rollers with the bottom plate when the paper feeding cassette is pulled out of the apparatus casing.
摘要:
A feeder for an object to be conveyed has an arm having a base end and a distal end and swingable about the base end; a pair of support shafts rotatably provided on both sides of the distal end of the arm; a pair of rotary feeding members for feeding the objects to be conveyed piled in a holder while abutting on the objects to be conveyed, the pair of rotary feeding members being fitted on outer surfaces of the pair of support shafts, respectively; and a regulating unit for regulating orientations of the pair of rotary feeding members uniformly with respect to a direction in which the pair of rotary feeding members rotate, the regulating unit being provided in interfaces between the support shafts and the rotary feeding members.
摘要:
This invention is related to a feeder for transporting a print medium from a tray along a U-shaped transporting path. The feeder includes a movement member coupled to a feeding roller. The movement member includes a first portion located at a position such that the print medium makes contact with the first portion when a transporting roller and the feeding roller simultaneously make contact with the print medium. The first portion receives a force from the print medium when the first print medium makes contact with the first portion. The movement member moves the feeding roller by utilizing the force such that a distance between the feeding roller and the support surface of the tray increases.
摘要:
A sheet feeding device includes: an arm member that is provided with a drive shaft at a base end thereof, the arm member being configured to swingably rotate around the drive shaft; a feed roller that is disposed at a leading end of the arm member, the feed roller feeding a sheet by being rotated while pressed on the uppermost sheet; and a transmission mechanism that is provided with one or more transmission rollers that transmit power provided from the drive shaft to the feed roller. Each of the transmission rollers is provided with a spindle that protrudes from both side faces thereof along an rotational axis. The arm member is provided with one or more pairs of bearing members for the respective transmission rollers, each of the pairs of the bearing members being faced with each other and being monolithically formed on the arm member.
摘要:
A sheet supplying apparatus, comprising a sheet accommodating portion which accommodates stacked recording sheets such that the recording sheets are supported by a support surface thereof; a sheet supplying arm which is supported by a frame such that the sheet supplying arm is pivotable about a first axis line, and which is biased toward the support surface of the sheet accommodating portion; a sheet supplying roller which is supported by an end portion of the sheet supplying arm such that the sheet supplying roller is rotatable about a second axis line parallel to the first axis line, and which is pressed on the uppermost recording sheet, so that when the sheet-supply roller is rotated, the uppermost recording sheet is supplied from the sheet accommodating portion; a receiving portion which is provided in the support surface and which is covered by the recording sheets and is opened when a trailing end of the last recording sheet passes over the receiving portion; and a moving device including a detecting portion which is supported by the recording sheets and which moves, when the trailing end of the last recording sheet passes over the receiving portion, into the receiving portion, and further including a detection-movement converting device which converts the movement of the detecting portion into the receiving portion, into the pivotal movement of the sheet supplying arm about the first axis line in a direction to move the sheet supplying roller away from the support surface of the sheet accommodating portion.