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US 5,755,435 AGranted
Document conveying arrangement in data processing apparatus
AssigneeFujitsu Limited
InventorTatsuo Fujiwara
Life of this patent
Estimating the term…
Abstract
A data processing apparatus having an image reading head. A box-shaped casing has upper and lower cavities, with a hopper table slidably arranged in the upper cavity. The lower cavity is a stacker. A pick roller, a separator roller, and conveying rollers are arranged in the hopper table. The rollers are driven by a common motor through a gear train. One-way clutches are incorporated in the gear train so that the pick roller, the separator roller, and the conveying rollers are driven when the motor rotates in a forward direction, and the separator roller and the pick roller are not driven and the conveying rollers are driven when the motor rotates in a reverse direction. The pick roller can be lifted or lowered depending on the rotational direction of the motor.
Claims28
A sheet conveying device comprising:
- feeding means for feeding a sheet to a sheet conveying path, wherein said feeding means comprises a pick roller for picking up said sheet from a hopper to feed said sheet to said sheet conveying path;
- conveying means for conveying said sheet fed by said feeding means, wherein said sheet conveying path is formed between said conveying means and said feeding means;
- an actuator for driving said feeding means and said conveying means;
- and
- movement transferring means arranged such that a movement transferring means driving force is transferred from said actuator to said feeding means when said actuator is actuated in a first direction and said movement transferring means driving force is not transferred from said actuator to said feeding means when said actuator is actuated in a second direction, whereby a movement of said feeding means is controlled by controlling an actuating direction of said actuator;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a third direction when said first shaft rotates in said third direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said third direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a fourth direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said third direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
12 more elements
A sheet conveying device comprising:
- feeding means for feeding a sheet to a sheet conveying path, wherein said feeding means comprises a pick roller for picking up said sheet from a hopper to feed said sheet to said sheet conveying path;
- conveying means for conveying said sheet fed by said feeding means, wherein said sheet conveying path is formed between said conveying means and said feeding means;
- an actuator for driving said feeding means and said conveying means;
- and
- movement transferring means arranged such that a movement transferring means driving force is transferred from said actuator to said feeding means and to said conveying means when said actuator is actuated in a first direction and said movement transferring means driving force is not transferred from said actuator to said feeding means, but is transferred to said conveying means when said actuator is actuated in a second direction;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a third direction when said first shaft rotates in said third direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said third direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a fourth direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said third direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
12 more elements
A data processing apparatus comprising:
- a hopper for setting sheets thereon;
- a stacker;
- data processing means;
- a pick roller for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- at least one conveying roller, wherein said at least one conveying roller and said pick roller have said sheet conveying path therebetween;
- a motor for driving said pick roller and said at least one conveying roller;
- and
- movement transferring means for transferring a movement transferring means driving force of said motor to said pick roller and said at least one conveying roller, said movement transferring means including at least one one-way clutch for transferring said movement transferring means driving force of said motor to any one of said pick roller and said at least one conveying roller;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a third direction when said first shaft rotates in said third direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said third direction;
- an arm for lifting said pick roller:
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a fourth direction by which said pick roller is lifted wherein said arm is lowered when said first gear rotates in said third direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
15 more elements
A data processing apparatus comprising:
- a hopper for setting sheets thereon;
- a stacker;
- data processing means;
- a pick roller for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- at least one conveying roller, wherein said at least one conveying roller and said pick roller have therebetween said sheet conveying path;
- a motor for driving said pick roller and said at least one conveying roller;
- and
- movement transferring means for transferring a movement transferring means driving force of said motor to said pick roller and said at least one conveying roller, said movement transferring means including at least two one-way clutches arranged such that said movement transferring means driving force is transferred from said motor to said pick roller and to said at least one conveying roller when said motor is actuated in a first direction and said movement transferring means driving force is not transferred from said motor to said pick roller, but is transferred to said at least one conveying roller when said actuator is actuated in a second direction;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a third direction when said first shaft rotates in said third direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said third direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a fourth direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said third direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
15 more elements
A data processing apparatus comprising:
- a casing having a first cavity and a second cavity arranged in a vertically spaced relationship;
- a hopper table drawably arranged in said first cavity, said hopper table having a hopper for setting sheets thereon;
- said second cavity being a stacker;
- data processing means arranged in said hopper table;
- a pick roller attached to a pick roller shaft for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- a separator roller attached to a separator roller shaft;
- at least one conveying roller attached to at least one conveying roller shaft, wherein said at least one conveying roller, said pick roller and said separator roller have therebetween said sheet conveying path from said hopper to said stacker;
- a motor for driving said pick roller, said separator roller and said at least one conveying roller;
- movement transferring means for transferring a driving force of said motor to said pick roller, said separator roller and said at least one conveying roller, said movement transferring means comprising:
- first transferring means operably connecting said at least one conveying roller shaft to said motor;
- a first one-way clutch associated with said first transferring means;
- second transferring means operably connecting said separator roller shaft to said at least one conveying roller shaft;
- a second one-way clutch associated with said second transferring means;
- third transferring means operably connecting said separator roller shaft to said at least one conveying roller shaft;
- a third one-way clutch associated with said second transferring means and functioning in an opposite sense to said second one-way clutch;
- fourth transferring means operably connecting said pick roller shaft to said separator roller shaft;
- whereby said driving force is transferred from said motor to said separator roller and to said at least one conveying roller when said motor is actuated in a first direction and said driving force is not transferred from said motor to said separator roller with said pick roller, but is transferred to said at least one conveying roller when said actuator is actuated in a second direction.
14 more elements
A sheet conveying apparatus comprising:
- feeding means comprising a pick roller for picking up sheets from a hopper and feeding said sheets to a sheet conveying path;
- a motor for driving at least said feed roller;
- movement transferring means for transferring a movement transferring means driving force of said motor to said pick roller;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller:
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a first direction when said first shaft rotates in said first direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said first direction;
- an arm for lifting said pick roller:
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a second direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said first direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
10 more elements
A data processing apparatus comprising:
- a pick roller attached to a pick roller shaft for picking up a sheet from a hopper to feed said sheet to a sheet conveying path;
- a second shaft arranged parallel to said pick roller shaft;
- at least one arm having a first end attached to said pick roller shaft and a second arm attached to said second shaft, said at least one arm being rotatable about an axis of said second shaft;
- a motor for driving at least said pick roller;
- movement transferring means for transferring a movement transferring means driving force of said motor to said pick roller;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a first direction when said first shaft rotates in said first direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said first direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a second direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said first direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
12 more elements
A data processing apparatus comprising:
- a hopper for setting sheets thereon;
- a stacker;
- data processing means;
- a pick roller attached to a pick roller shaft for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- a separator roller attached to a separator roller shaft;
- at least one conveying roller attached to at least one conveying roller shaft, wherein a sheet conveying path is formed between said at least one conveying roller, said pick roller and said separator roller;
- a motor for driving said pick roller, said separator roller and said at least one conveying roller;
- movement transferring means for transferring a driving force of said motor to said pick roller, said separator roller and said at least one conveying roller;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a first direction when said first shaft rotates in said first direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said first direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a second direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said first direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
15 more elements
A data processing apparatus comprising:
- a casing having a first cavity and a second cavity arranged in a vertically spaced relationship;
- a hopper table drawably arranged in said first cavity, said hopper table having a hopper for setting sheets thereon;
- said second cavity being a stacker;
- data processing means arranged in said hopper table;
- a pick roller attached to a pick roller shaft for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- a separator roller attached to a separator roller shaft;
- at least one conveying roller attached to at least one conveying roller shaft, wherein said at least one conveying roller, said pick roller and said separator roller have said sheet conveying path therebetween;
- a motor for driving said pick roller, said separator roller and said at least one conveying roller;
- movement transferring means for transferring a movement transferring means driving force of said motor to said pick roller, said separator roller and said at least one conveying roller;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a first direction when said first shaft rotates in said first direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said first direction;
- a plurality of arms for lifting said pick roller;
- a second shaft having at least one arm of said plurality of arms attached thereto for lifting and lowering said at least one arm of said plurality of arms;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a second direction by which said pick roller is lifted, wherein said at least one arm of said plurality of arms is lowered when said first gear rotates in said first direction and said at least one arm of said plurality of arms is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
16 more elements
A data processing apparatus comprising:
- a hopper for setting sheets thereon;
- a stacker;
- data processing means;
- a pick roller for picking up said sheets from said hopper to feed said sheets to a sheet conveying path;
- at least one conveying roller, wherein said sheet conveying path is formed between said at least one conveying roller and said pick roller;
- an actuator for driving said pick roller and said at least one carrying roller;
- control means for controlling said actuator so that said actuator is driven with a first speed while said pick roller feeds said sheets and said actuator is driven with a second speed higher than said first speed while said at least one conveying roller conveys said sheets with said pick roller in a non-operative condition;
- and
- means for lifting said pick roller comprising:
- a driving source generating a pick roller lifting means driving force for rotationally driving at least said pick up roller;
- a first shaft rotationally driven by said driving source to rotate said pick roller;
- a first gear attached to said first shaft such that said first gear is rotated in a first direction when said first shaft rotates in said first direction and said pick roller lifting means driving force is not transmitted to said first gear when said first shaft does not rotate in said first direction;
- an arm for lifting said pick roller;
- a second shaft having said arm attached thereto for lifting and lowering said arm;
- a second gear attached to said second shaft for engagement with said first gear to transmit said pick roller lifting means driving force to said second shaft depending upon a rotation of said first gear;
- and
- an elastic member for urging said second gear in a second direction by which said pick roller is lifted, wherein said arm is lowered when said first gear rotates in said first direction and said arm is lifted by an urging force of said elastic member when said driving force is not transmitted to said first gear.
14 more elements
Dependencies are inferred from the claim text.