Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Eric L Andersen

Douglas G Keithley

Kenneth Kay Smith

Paul K Mui

Russell A Mendenhall

Wesley Alan Fujii

Ryan M Smith

Anthony G Laidlaw

Paul L Jeran

Scott A Putz

Mark M Josephsen

Arthur H Barnes

Curt Nelson Van Lydegraf

Richard G Sevier

Keng Leong Ng

Roberto Obregon

Dejan Depalov

Darrell L Cox

Kenneth Scott Line

Craig L Miller

Shannon Lai

Anthony J Sanchez

Jerry Wagner

Kendra Dunlap

Jennifer L Clark

Thomas M Sternberg

Jennifer Waskow

Rhasool Shabazz

A mechanism for an ADF having upper and lower trays, a base connecting the trays, and a cover pivotally connected to the upper tray includes a housing provided within the base and movable relative thereto. A transmission has a gripping position for transporting paper along a path from the upper tray to the lower tray and a release position allowing a paper jam along the path to be remedied. The cover is pivotable between a first condition maintaining the transmission in the gripping position and a second condition allowing the housing to move relative to the trays to place the transmission in the release position.

Paper feeding mechanism

Example implementations relate to an edge sensing apparatus. For example, an edge sensing apparatus consistent to the present disclosure may include a reflector in a beam path of a retroreflective sensor. The edge sensing apparatus consistent with the present disclosure may include a cover glass located between the retroreflective sensor and the reflector. The edge sensing apparatus consistent with the present disclosure may include a media feeder to feed a media along a media path between the cover glass and the retroreflective sensor.

Edge sensing

In one example, an apparatus includes a transparent platen to receive a document to be scanned. The transparent platen includes a scan line, an ingress edge positioned prior to the scan line in the document path, and a chamfered egress edge positioned subsequent to the document path. A light source is positioned to illuminate the document with light while the document passes across the scan line, and a focusing mechanism is positioned to focus a portion of the light that is reflected by the document onto a sensor that senses the portion of the light.

Transparent platen with chamfered egress edge

A method for calibrating a multi-function printing (MFP) device includes printing a calibration target image on a first side of a print medium from at least one print medium source with a printing device of the MFP device. The calibration target image includes at least one fiducial. The method includes scanning the first side of the print medium comprising the calibration target image with a scanning device of the MFP device to create a first scanned image, identifying at least one edge of the print medium via a background pattern to determine a number of scan measurements, identifying at least one position of the at least one fiducial within the calibration target image, and calculating a calibration target error based on the at least one fiducial and the scan measurements.

Multi-function printing (MFP) device calibration

An imaging device assembly that includes a first imaging module frame, a second imaging module frame, and at least one first attachment member including a base positioned within an interior of the first imaging module frame and at least one protrusion extending from the base through a first wall portion of the first imaging module frame to be exposed external to the first imaging module frame, wherein the at least one protrusion is releasably connected to a top portion of the second imaging module frame.

Imaging device assembly

A scanner drive system is disclosed. The scanner drive system has a drive motor. The drive motor has a worm gear attached to the motor spindle. The worm gear has multiple leads. The worm gear is meshed with a helical gear. The helical gear is coupled to a drive train that moves a scanning module.

Scanner with a multiple lead worm gear

A scanner is disclosed. The scanner has a flatbed glass and an ADF glass mounted to a top cover with a gap formed between the two glass pieces. The scanner has a scanner module that has an ADF scan position underneath the ADF glass and a flatbed scan position underneath the flatbed glass. When the scanner module is in the flatbed scan position the scanner module references the flatbed glass. The scanner module crosses the gap between the two glass pieces when the scanner module moves from the flatbed scan position to the ADF scan position. The scanner module is lowered away from the flatbed glass as the scanner module approaches and moves across the gap between the two glass pieces.

Scanner with a separate flatbed glass and ADF glass

In one embodiment, an apparatus includes a transparent platen supported over an inside of a tub, an elongated member situated in the tub in a horizontal plane, a plurality of biasing members operatively connected to the elongated member, and a plurality of gap-maintaining members operable to connect to an image capture module and operatively connected to the platen. The elongated member is movable within a tub in a vertical plane, to movably support an image capture module in a horizontal plane. The biasing members are operable to urge the elongated member towards the platen. The gap-maintaining members are operable to maintain a constant distance between platen and an image capture module.

Image capture module support

A method and system sense print a calibration feature towards an edge of a medium, scan the feature to determine a parameter and adjust a characteristic of the scanner based on the parameter.

Scanner characteristic adjustment

In one embodiment, a media handling system is provided to transfer media through an image forming device having a primary media path and a duplex media path. The media handling system includes a media feeder configured to input media into the duplex media path of the image forming device.

System and method for handling print media

A method is disclosed for generating a calibration target on a medium. The method can include the operation of inserting the medium into a printer with a first orientation. A further operation can be printing a first calibration feature at a first lateral location on the medium. Another operation can be reinserting the medium into the printer with a second orientation rotated 180 degrees from the first orientation. A second calibration feature can be printed at a second lateral location on the medium.

Method and apparatus for generating a calibration target on a medium

A method and apparatus for an imaging device to automatically detect the presence of an automatic document feeder.

Multifunction automatic document feeder (ADF) switch

A representative embodiment provides for an automatic document feeder apparatus configured for use in conjunction with an imaging device, and includes a feed guide supported in spaced overlying relation to a scan window of the imaging device. The automatic document feeder further includes a first document guide and a second document guide. The first and second document guides are supported in spaced relation to each other and are configured to guide a sheet media between the feed guide and the scan window. In use, the sheet media is the only element present between the scan window and the feed guide. Another representative embodiment provides for a method of automatically feeding documents, including guiding a sheet media into a gap that is defined by a scan window and a feed guide, and guiding the sheet media out of the gap.

Automatic document feeder

A single plate flatbed scanner utilizing a single sensor to detect both opening of a lid covering the plate and the leading edge of an automatically fed document. The flatbed scanner includes a contact glass plate defining a flatbed scanning area where a document to be scanned may be manually positioned. An automatic document feeder (ADF) scan window where ADF-fed documents are scanned is defined within the flatbed scanning area. An image sensor is maintained at a fixed position in the ADF scan window while scanning ADF-fed documents. To scan a manually fed document, the image sensor moves under the flatbed scanning area so as to scan an image of the document. Since the ADF scan window and the flatbed scanning area both are defined in the same area of the contact glass plate, a document inadvertently left on the contact glass blocks the ADF scan window and prevents the scanning of an ADF fed document. A single sensor is utilized to detect the opening of the ADF which uncovers the contact glass to allow manual placement of a document. Detecting the opening of the glass plate cover is used to determine whether or not a document has been left on the glass plate after scanning. The same sensor is also utilized to detect the leading edge of an ADF fed document to initiate the scanning process at the precise time the document reaches the ADF scan window.

Single automatic document feeder sensor for media leading edge and top cover being opened detection

An apparatus and method for calibrating a scanner connected to a document feeder are provided. In one embodiment, the apparatus includes a calibration strip attached to a rotatable wheel assembly disposed within the document feeder. A cam is provided to rotate the wheel assembly and expose the calibration strip to the field of view of a head assembly of the scanner for calibration. The cam is configured to then rotate the wheel assembly in the opposite direction, so that the calibration strip is no longer exposed to the head assembly. A cleaning blade may be provided to wipe the calibration strip as it is moved to its non-exposed position.

Growing community of inventors

Meridian, ID, United States of America

Eric L Andersen