A method of reducing sheet product waste generated during use of a sheet product dispenser in a particular location and over a broad range of usage rates includes designing a dispenser. The design includes determining a desired housing size to obtain a top to bottom height for sheet product roll storage within the housing, dividing the height by two to obtain a maximum roll diameter, locating two roll holders in the housing so that each holder may accept a roll having the maximum roll diameter, positioning a first roll of the maximum roll diameter in a first one of the two roll holders, and positioning a second roll of the maximum roll diameter in a second one of the two roll holders so that two rolls of equivalent length are configured to be dispensed sequentially from the dispenser. The installation and use of two rolls of maximum roll diameter reduces waste. Dispensers formed according to this method are also described.

A method of reducing sheet product waste generated during use of a sheet product dispenser in a particular location and over a broad range of usage rates includes designing a dispenser. The design includes determining a desired housing size to obtain a top to bottom height for sheet product roll storage within the housing, dividing the height by two to obtain a maximum roll diameter, locating two roll holders in the housing so that each holder may accept a roll having the maximum roll diameter, positioning a first roll of the maximum roll diameter in a first one of the two roll holders, and positioning a second roll of the maximum roll diameter in a second one of the two roll holders so that two rolls of equivalent length are configured to be dispensed sequentially from the dispenser. The installation and use of two rolls of maximum roll diameter reduces waste. Dispensers formed according to this method are also described.

Methods, systems and apparatus for dynamically adjusting product use reporting schedules for dispensers to increase or decrease the frequency of such reports based on expected product use such as a date the dispenser is expected to be depleted.

A sheet product dispenser is provided including a housing including a roll holder configured to receive a product roll, a dispensing mechanism configured to dispense a portion of the sheet product from the product roll, a sensor configured to emit a signal toward the product roll and receive a reflection of the signal from a surface of the product roll, and a controller. The controller is configured to receive an indication of replacement of the product roll, determine a time-of-flight of the signal, and determine an expected time-of-flight (or corresponding distance of travel) of a theoretical signal to a theoretical full product roll. The controller is further configured to compare the time-of-flight (or a corresponding distance of travel) of the signal to the product roll to the expected time-of-flight or distance, and adjust a product depletion curve based on the comparison.

A sheet product dispenser is provided. The sheet product dispenser includes a roll of sheet product, a dispensing arrangement, and a method of sensing the separation of a dispensed sheet product. A sensor is provided for detecting the movement of a movable member, such as a tear bar or paper guide. The sensor generates a signal in response to the movement of the movable member. A controller de-energizes a roller in said dispensing arrangement in response to said signal.

Improvements to sheet product dispensers configured to hold multiple product rolls are provided herein. An example sheet product dispenser comprises a housing defining a dispensing position and a reserve position. The housing is configured to hold a first roll of sheet product in the dispensing position and a second roll of sheet product in the reserve position, where a user can receive a portion of the first roll of sheet product that is in the dispensing position. The sheet product dispenser includes a roll replacement feature that is configured to enable installation of a replacement roll of sheet product into the reserve position. The sheet product dispenser includes a restrictive access feature configured to prevent installation of the replacement roll of sheet product directly into the dispensing position in an instance in which the roll replacement feature enables installation of the replacement roll of sheet product in the reserve position.

Sheet product dispensers and methods of dispensing sheet products are provided, including feeding a sheet material from a roll via a sheet feeding mechanism, separating one or more discrete sheet products from the roll via a separation mechanism, dispensing the one or more discrete sheet products to an end user at a presentation station via a sheet product conveying mechanism, and detecting a presence of the sheet material via a sensor downstream of the sheet feeding mechanism, wherein the sheet product conveying mechanism is driven in response to the sensor detecting the presence of the sheet material.

A sheet product (e.g., napkin) dispenser may include an example calibration system and method for a product depletion curve for accurately determining a product level. An example sheet product dispenser includes a housing, a roll holder, a dispensing mechanism, a sensor, and a controller. The sensor is configured to emit a signal toward the product roll and receive a return signal. The controller is configured to receive a calibration product roll and operate the sensor to emit the signal and receive the return signal. The controller determines a brightness value of the return signal and determines a calibration value associated with the determined brightness value. The determined brightness value is within a range of brightness values associated with the calibration value. The controller adjusts a product depletion curve based on at least the determined calibration value and the determined brightness value. Additionally, example product level notification systems are provided herein.

A method of reducing sheet product waste generated during use of a sheet product dispenser in a particular location and over a broad range of usage rates includes designing a dispenser. The design includes determining a desired housing size to obtain a top to bottom height for sheet product roll storage within the housing, dividing the height by two to obtain a maximum roll diameter, locating two roll holders in the housing so that each holder may accept a roll having the maximum roll diameter, positioning a first roll of the maximum roll diameter in a first one of the two roll holders, and positioning a second roll of the maximum roll diameter in a second one of the two roll holders so that two rolls of equivalent length are configured to be dispensed sequentially from the dispenser. The installation and use of two rolls of maximum roll diameter reduces waste. Dispensers formed according to this method are also described.

A drop assembly for a paper product dispenser is provided that transitions an upper carriage for a second roll of paper product into a primary or first position after depletion of a first or primary roll of paper product without user intervention. The drop assembly transitions the upper carriage into approximately the same position previously occupied by the lower carriage, allowing a small aperture in a front face of a dispenser to be used. Additionally, the drop assembly can include a reset connection to transition the drop assembly back to the firsts position upon opening of a dispenser front face.