US 11,146,708 B2Granted

Image reading device

AssigneeKYOCERA Document Solutions Inc.

InventorHayato Hirayama

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Abstract

A guide mechanism guides a carriage from a first position to a second position in a sub scanning direction, guides the carriage from the second position to a third position that is different, in a main scanning direction, from the second position, guides the carriage from the third position to a fourth position in the sub scanning direction, and guides the carriage from the fourth position to the first position. A first interval maintaining portion maintains a first interval between the carriage and a platen glass when the carriage moves in a first driving direction in a scan range in the sub scanning direction. A second interval maintaining portion maintains a second interval between the carriage and the platen glass when the carriage moves in a second driving direction in the scan range, the second interval being different from the first interval.

Claims7

Dependent claims

An image reading device comprising:

a carriage supported in such a way as to move along a lower surface of a platen glass, and configured to support a contact image sensor unit such that the contact image sensor unit can approach and separate from the platen glass in a state of being along a main scanning direction, and to elastically bias the contact image sensor unit toward the platen glass;
a drive device configured to apply a driving force to the carriage in a first driving direction or a second driving direction that go along a sub scanning direction perpendicular to the main scanning direction, the second driving direction being opposite to the first driving direction;
a guide mechanism configured to guide a moving direction of the carriage to which the driving force is applied;
and
an interval maintaining member provided along the lower surface of the platen glass and configured to maintain a predetermined interval between the contact image sensor unit and the platen glass by coming in contact with an upper slide portion on an upper surface of the contact image sensor unit, wherein
in a case where a driving force in the first driving direction is applied to the carriage in a state where the carriage is located at a predetermined first position, the guide mechanism guides the carriage from the first position to a predetermined second position in the sub scanning direction;
after the carriage reaches the second position, the guide mechanism guides the carriage from the second position to a third position that is different, in the main scanning direction, from the second position;
in a case where a driving force in the second driving direction is applied to the carriage in a state where the carriage is located at the third position, the guide mechanism guides the carriage from the third position to a predetermined fourth position in the sub scanning direction;
and after the carriage reaches the fourth position, the guide mechanism guides the carriage from the fourth position to the first position,
the interval maintaining member includes:
a first interval maintaining portion configured to maintain a predetermined first interval between the carriage and the platen glass when the carriage moves in the first driving direction in a predetermined scan range in the sub scanning direction;
and
a second interval maintaining portion configured to maintain a predetermined second interval between the carriage and the platen glass when the carriage moves in the second driving direction in the scan range, the second interval being different from the first interval, and
the first interval maintaining portion and the second interval maintaining portion are formed to extend in the sub scanning direction and adjacent to each other in the main scanning direction.

11 more elements

An image reading device comprising:

a carriage supported in such a way as to move along a lower surface of a platen glass, and configured to support a contact image sensor unit such that the contact image sensor unit can approach and separate from the platen glass in a state of being along a main scanning direction, and to elastically bias the contact image sensor unit toward the platen glass;
a drive device configured to apply a driving force to the carriage in a first driving direction or a second driving direction that go along a sub scanning direction perpendicular to the main scanning direction, the second driving direction being opposite to the first driving direction;
a guide mechanism configured to guide a moving direction of the carriage to which the driving force is applied;
and
an interval maintaining member provided along the lower surface of the platen glass and configured to maintain a predetermined interval between the contact image sensor unit and the platen glass by coming in contact with an upper slide portion on an upper surface of the contact image sensor unit, wherein
in a case where a driving force in the first driving direction is applied to the carriage in a state where the carriage is located at a predetermined first position, the guide mechanism guides the carriage from the first position to a predetermined second position in the sub scanning direction;
after the carriage reaches the second position, the guide mechanism guides the carriage from the second position to a third position that is different, in the main scanning direction, from the second position;
in a case where a driving force in the second driving direction is applied to the carriage in a state where the carriage is located at the third position, the guide mechanism guides the carriage from the third position to a predetermined fourth position in the sub scanning direction;
and after the carriage reaches the fourth position, the guide mechanism guides the carriage from the fourth position to the first position,
the interval maintaining member includes:
a first interval maintaining portion configured to maintain a predetermined first interval between the carriage and the platen glass when the carriage moves in the first driving direction in a predetermined scan range in the sub scanning direction;
and
a second interval maintaining portion configured to maintain a predetermined second interval between the carriage and the platen glass when the carriage moves in the second driving direction in the scan range, the second interval being different from the first interval, and
the guide mechanism includes:
a lower slide member formed integrally with the carriage, wherein in the lower slide member, a first concave portion and a second concave portion are formed adjacent to each other in the main scanning direction;
and
a rail member fixed below the carriage, formed to extend in the sub scanning direction, and configured to:
when a driving force in the first driving direction is applied to the carriage in a state where the rail member fits in the first concave portion, guide the carriage in the sub scanning direction from the first position to the second position;
and when a driving force in the second driving direction is applied to the carriage in a state where the rail member fits in the second concave portion, guide the carriage in the sub scanning direction from the third position to the fourth position.

16 more elements

An image reading device comprising:

a carriage supported in such a way as to move along a lower surface of a platen glass, and configured to support a contact image sensor unit such that the contact image sensor unit can approach and separate from the platen glass in a state of being along a main scanning direction, and to elastically bias the contact image sensor unit toward the platen glass;
a drive device configured to apply a driving force to the carriage in a first driving direction or a second driving direction that go along a sub scanning direction perpendicular to the main scanning direction, the second driving direction being opposite to the first driving direction;
a guide mechanism configured to guide a moving direction of the carriage to which the driving force is applied;
and
an interval maintaining member provided along the lower surface of the platen glass and configured to maintain a predetermined interval between the contact image sensor unit and the platen glass by coming in contact with an upper slide portion on an upper surface of the contact image sensor unit, wherein
in a case where a driving force in the first driving direction is applied to the carriage in a state where the carriage is located at a predetermined first position, the guide mechanism guides the carriage from the first position to a predetermined second position in the sub scanning direction;
after the carriage reaches the second position, the guide mechanism guides the carriage from the second position to a third position that is different, in the main scanning direction, from the second position;
in a case where a driving force in the second driving direction is applied to the carriage in a state where the carriage is located at the third position, the guide mechanism guides the carriage from the third position to a predetermined fourth position in the sub scanning direction;
and after the carriage reaches the fourth position, the guide mechanism guides the carriage from the fourth position to the first position,
the interval maintaining member includes:
a first interval maintaining portion configured to maintain a predetermined first interval between the carriage and the platen glass when the carriage moves in the first driving direction in a predetermined scan range in the sub scanning direction;
and
a second interval maintaining portion configured to maintain a predetermined second interval between the carriage and the platen glass when the carriage moves in the second driving direction in the scan range, the second interval being different from the first interval,
the guide mechanism includes:
a lower slide member formed integrally with the carriage, wherein in the lower slide member, a first concave portion and a second concave portion are formed adjacent to each other in the main scanning direction;
a rail member fixed below the carriage, formed to extend in the sub scanning direction, and configured to:
when a driving force in the first driving direction is applied to the carriage in a state where the rail member fits in the first concave portion, guide the carriage in the sub scanning direction from the first position to the second position;
and when a driving force in the second driving direction is applied to the carriage in a state where the rail member fits in the second concave portion, guide the carriage in the sub scanning direction from the third position to the fourth position;
a first biasing portion configured to bias, from a first side to a second side in the main scanning direction with respect to the rail member, the carriage that has moved in the first driving direction in a state where the rail member fits in the first concave portion and has reached the second position;
and
a second biasing portion configured to bias, from the second side to the first side in the main scanning direction with respect to the rail member, the carriage that has moved in the second driving direction in a state where the rail member fits in the second concave portion and has reached the fourth position, and
the rail member includes:
a first guide groove that crosses over a portion of the rail member that is close to an end thereof on a downstream side in the first driving direction, wherein when the carriage is biased by the first biasing portion, the first guide groove guides a boundary portion between the first concave portion and the second concave portion of the lower slide member from the first side to the second side in the main scanning direction with respect to the rail member, thereby guiding the carriage from the second position to the third position;
and
a second guide groove that crosses over a portion of the rail member that is close to an end thereof on an upstream side in the first driving direction, wherein when the carriage is biased by the second biasing portion, the second guide groove guides the boundary portion of the lower slide member from the second side to the first side in the main scanning direction with respect to the rail member, thereby guiding the carriage from the fourth position to the first position.

22 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/906,865Filed 19 Jun 2020
Priority: JP JP2019-11627924 Jun 2019
Published: US 2020/0404118 A124 Dec 2020
Granted: 12 Oct 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04N 1/1017
With sub-scanning by translatory movement of at least a part of the main-scanning components: the main-scanning components remaining positionally…
H04N 1/103
With sub-scanning by translatory movement of at least a part of the main-scanning components: by engaging a rail
H04N 2201/0081
Types of the still picture apparatus: image reader
H04N
Pictorial communication