US 10,542,174 B2 · Optical flatbed scanner with rigid transparent plate fixing

Abstract

A flatbed scanner document scanner includes a large format document scanner body accommodating a rectangular rigid frame with an upwardly facing plane face and a rectangular transparent plate for supporting a large format document. The rectangular transparent plate overlies the upwardly facing plane face all around the metal frame. The scanner also includes a movable carriage configured to move along and below the rectangular transparent plate and carrying a line camera extending across the rectangular transparent plate. The rectangular transparent plate and the metal frame are bonded together by a hard glue seam that runs on the upwardly facing plane face of the metal frame. A predetermined deflected shape can be formed when the bonded plate and frame are turned upside-down. The rectangular metal frame can deform under its own load to a cambered shape, a flat shape or a less deflected shape when turned upright in a normal position.

Claims25

Dependent claims

A flatbed scanner, comprising:

a scanner body accommodating:
a frame comprising opposite frame elements each with an upwardly facing face;
a transparent plate, for supporting a large format document;
wherein the transparent plate overlies the upwardly facing plane face of the frame;
and
a movable carriage configured to move below the transparent plate and carrying a line camera extending across the transparent plate;
wherein the transparent plate is bonded to the frame elements by a glue seam that runs on upwardly facing faces of the frame elements and forms a rigid bond between the transparent plate and the frame, and
wherein at least a pair of opposite frame elements are configured with torsion about a longitudinal axis of a respective frame element causing a twist of the frame elements which is balanced by the rigid bond between the transparent plate and the frame.

5 more elements

A flatbed scanner, comprising:

a scanner body accommodating:
a frame comprising opposite frame elements each with an upwardly facing face;
a transparent plate, for supporting a document;
wherein the transparent plate overlies the upwardly facing plane face of the frame;
and
a movable carriage configured to move below the transparent plate and carrying a line camera extending across the transparent plate;
wherein the transparent plate is bonded to the frame elements by a hard glue seam that runs on upwardly facing faces of the frame elements and forms a rigid bond between the transparent plate and the frame;
wherein the frame elements are configured with torsion about a longitudinal axis a respective frame element, and
wherein the torsion is greater in a first state, wherein the transparent plate and the frame has a normal orientation and wherein the transparent plate is relatively plane, compared to a second state, wherein the transparent plate and the frame is turned upside-down and wherein the transparent plate has a cambered, and less plane, shape.

6 more elements

A flatbed scanner, comprising:

a scanner body accommodating:
a frame comprising opposite frame elements each with an upwardly facing face;
a transparent plate, for supporting a large format document;
wherein the transparent plate overlies the upwardly facing plane face of the frame;
and
a movable carriage configured to move below the transparent plate and carrying a line camera extending across the transparent plate;
wherein the transparent plate is bonded to the frame elements by a glue seam that runs on upwardly facing faces of the frame elements and forms a rigid bond between the transparent plate and the frame;
and
wherein the glue seam has a hardness selected from the groups of:
a Shore-D hardness greater than 50;
a Shore-D hardness greater than 60;
a Shore-D hardness greater than 70;
a Shore-D hardness greater than 80;
a Shore-D hardness in the range of:
greater than 60 and less than 90.

12 more elements

Dependencies are inferred from the claim text.

Optical flatbed scanner with rigid transparent plate fixing

Life of this patent

Optical flatbed scanner with rigid transparent plate fixing

Life of this patent

Abstract

Claims25