US 9,426,325 B2Granted

Document reading device

AssigneesXerox Corporation, Nisca Corporation

InventorsShinnosuke Enomoto, Seiji Nishizawa

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Abstract

A document reading device is capable of preventing distortion or twisting occurring in a document conveying device from being transmitted to a reading carriage incorporated in the document conveying device. A document reading device includes a second reading carriage provided in a document conveying unit and configured to read a surface of a document different from a surface read by a first reading carriage, a support frame having a support surface supporting the second reading carriage, a retaining member retaining the second reading carriage by sandwiching the same between itself and the support frame, and an elastic member provided between the second reading carriage and retaining member to press the second reading carriage against the support frame. One of the support surface of the support frame and a supported surface of the second reading carriage supported by the support surface is formed into a curved surface.

Claims12

Dependent claims

A document reading device, comprising:

a sheet supply tray on which a document is placed;
a sheet discharge tray housing the document thereon;
a U-shaped document conveying path extending from the sheet supply tray to the sheet discharge tray;
a reading carriage arranged inside the U-shaped document conveying path and reading the document conveyed along the U-shaped document conveying path;
a mounting portion having a mounting surface and arranged on each end portion of the reading carriage perpendicular to a document conveying direction;
a pair of support frames arranged at two sides of the reading carriage in a document width direction;
a support portion having a support surface and arranged on each of the pair of support frames and abutted against the mounting portion to support the reading carriage;
an elastic member arranged to overlap with a rear surface of the mounting portion opposite to the mounting surface thereof abutting against the support portion;
and
a retaining member sandwiching the mounting portion and the elastic member with the support portion of the support frame to retain the mounting portion and the elastic member therebetween,
wherein one of the support surface of the support portion abutted against the mounting portion and the mounting surface of the mounting portion abutting against the support surface of the support portion has a curved surface, and
the U-shaped document conveying path includes a sheet supply path through which the document is supplied from the sheet supply tray, and the retaining member is a guide member forming the sheet supply path.

9 more elements

A document reading device, comprising:

a document conveying unit and a document reading unit,
the document conveying unit including:
a sheet supply tray on which a document is placed;
a sheet discharge tray that houses the document;
and
a document conveying path that extends from the sheet supply tray to the sheet discharge tray and is formed to be opened or closed with respect to the document reading unit, and
the document reading unit including:
a first reading carriage that reads a surface of the document conveyed by the document conveying unit;
a second reading carriage that reads another surface of the document opposite to the surface read by the first reading carriage, and having a mounting portion;
a support frame having a support portion abutted against the mounting portion of the second reading carriage to support the second reading carriage;
an elastic member arranged on and overlapped with the mounting portion of the second reading carriage;
and
a retaining member that retains the second reading carriage, the retaining member sandwiching the mounting portion of the second reading carriage and the elastic member with the support portion of the support frame,
wherein one of a support surface of the support portion of the support frame abutted against the mounting portion of the second reading carriage and a supported surface of the mounting portion of the second reading carriage abutting against the support surface of the support portion of the support frame has a curved surface,
the supported surface includes two columnar surfaces apart from each other and an insertion hole arranged between the two columnar surfaces, and
each of the two columnar surfaces is convexed outwardly toward the support surface of the support portion, and the retaining member is inserted in the insertion hole.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/424,274Filed 23 Aug 2013
Priority: JP 2012-18605527 Aug 2012
Published: US 2015/0222777 A16 Aug 2015
Granted: 23 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04N 1/2032
Simultaneous scanning of two or more separate pictures , e.g. two sides of the same sheet: of two pictures corresponding to two sides of a single…
B65H 5/26
Feeding articles separated from piles; Feeding articles to machines: duplicate, alternate, selective, or coacting feeds
B65H 7/20
Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or…:…
H04N 1/123
Feeding arrangements: using a dedicated sheet guide element