Lexmark International, Inc.

Jake Tia Pia

William Paul Cook

Jason Lee Rowe

Donald Norman Spitz

Daniel Paul Cahill

Roel Firmeza Pantonial

Douglas Andagan Baena, Jr

Michael Villanueva Caneza

Kim Limpahan Balahan

Dale Bryan Cuesta Balili

Stacey Edward Balch

Robert Ryan Fresnoza Cruz

Irvin Langit Libres

Marvin Aliviado Rodriguez

Marvin Aliviado Rodriquez

Joe Rey Naquila Dumandan

A translatable media height sensor assembly for measuring a media stack in an imaging forming device. The assembly includes a support and drive and insertion assemblies mounted thereon. Insertion assembly includes a translatable plunger having mounted thereon a sensor and a translatable probe. At a home position, the sensor is actuated by a flag on the support placing sensor output in a first state. During measurement, drive assembly translates insertion assembly toward a media stack and the sensor output changes to a second state and a counter is started. The probe initially encounters the media stack and stops while plunger continues to translate. As the plunger reaches the media stack, the probe engages the sensor causing the sensor output to again change state and stops the counter. The insertion assembly retracts back to the home position where the flag actuates the sensor causing the sensor output to change state.

Translatable media stack height sensor assembly

A translateable media height sensor assembly for measuring a media stack height in an imaging forming device. The assembly includes a support and drive and insertion assemblies mounted thereon. The insertion assembly includes a translateable plunger having mounted thereon a sensor and a translateable probe. At a home position the sensor is actuated by a flag on the support placing sensor output in a first state. During measurement, the drive assembly translates the insertion assembly toward a media stack and the sensor output changes to a second state and a counter is started. The probe encounters the media stack and stops while the plunger and the sensor continue to translate with the probe engaging the sensor causing the sensor output to again change state and stop the counter. The insertion assembly retracts back to the home position where the flag actuates the sensor causing the sensor output to change state.

Reduced component translatable media stack height sensor assembly

A method for dynamically lifting an elevator includes picking a sheet from a stack to feed to a media process where the stack is on a platform that can be lifted by an elevator, performing the media process, sensing a top of the stack to detect presence or absence of the stack at a media home position, sensing the top of the stack to detect presence or absence of the stack on the platform, sensing the platform to detect its presence or absence at a maximum elevator level, and indexing the stack at least once by lifting the platform through a given distance, during the media process and not during picking a sheet, unless presence of the top of the stack at the media home position is sensed or absence of media sheets on the elevator platform is sensed or presence of the elevator platform at the maximum elevator level is sensed.

Method for dynamically lifting elevator platform of media input tray during ongoing media process

A media handling system includes a platform, a bin supporting the platform below and for undergoing movement toward and away from a sheet feeding position, a first motion transmitting assembly coupled between the platform and bin and tailored to counterbalance the weight of the platform and any stack such that as the weight decreases the platform is lifted toward the sheet feeding position to maintain the stack top below a lower limit position thereof, a control mechanism to sense the position of the stack top relative to a given range between the lower limit position to an upper home position, and a second motion transmitting assembly drivingly coupled to the platform via the first motion transmitting assembly and responsive to the control mechanism sensing to cause the first motion transmitting assembly to further lift the platform to and maintain the stack top position within the given range.

Media handling system for maintaining stack top within given range of pick positions during feeding sheets from stack top

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Liloan, Philippines

Jake Tia Pia