Abstract: A method of estimating a volume of a remaining fluidum in a non-translucent recipient having an opening which area is wider than or equal to the area of a bottom of the recipient. The method includes taking a picture of the opening at the top side of the recipient by with camera, deriving from the picture characteristics of a first and second number of pixels representing a visible part of the recipient and a visible part of the fluidum in the recipient, respectively, requesting from a user an identification of the recipient, matching the identification with a stored identification in order to retrieve reference data about an empty recipient, and estimating a volume of the remaining fluidum in the recipient by means of the retrieved reference data and a ratio of the characteristics of the first number of pixels and the characteristics of the second number of pixels.

Abstract: A system includes a printer including a plurality of functional modules and a controller configured to control the print process, a storage device configured to store information regarding supporting an operator to interact with a functional module of the plurality of functional modules other than the local user interface of the printer, a presence detection system configured to detect a presence of an operator near or at the functional module, and an information presentation device configured to present information within a perception reach of the operator. The system includes a computer device connected to the presence detection system, the storage device, the printer and the information presentation device.

Abstract: A method of estimating a volume of a remaining fluidum in a non-translucent recipient having an opening which area is wider than or equal to the area of a bottom of the recipient. The method includes taking a picture of the opening at the top side of the recipient by with camera, deriving from the picture characteristics of a first and second number of pixels representing a visible part of the recipient and a visible part of the fluidum in the recipient, respectively, requesting from a user an identification of the recipient, matching the identification with a stored identification in order to retrieve reference data about an empty recipient, and estimating a volume of the remaining fluidum in the recipient by means of the retrieved reference data and a ratio of the characteristics of the first number of pixels and the characteristics of the second number of pixels.

Abstract: A method of estimating an amount of an unconsumed part of a recording material wrapped on a core of a roll is implemented as an application program for an electronic device having a camera. A storage device stores reference data about the roll and the recording material in an unconsumed state. The method includes taking a picture of the recording material and the core with a camera, deriving from the picture characteristics of a first and second number of pixels representing the core and the unconsumed part of the recording material, respectively, requesting from a user an identification of the roll and the recording material, receiving the identification, matching the identification with the reference data, and calculating the amount of the unconsumed part of the recording material by means of the matched reference data and the characteristics of the first and second numbers of pixels.

Abstract: A system includes a printer including a plurality of functional modules and a controller configured to control the print process, a storage device configured to store information regarding supporting an operator to interact with a functional module of the plurality of functional modules other than the local user interface of the printer, a presence detection system configured to detect a presence of an operator near or at the functional module, and an information presentation device configured to present information within a perception reach of the operator. The system includes a computer device connected to the presence detection system, the storage device, the printer and the information presentation device.

Abstract: A method of estimating an amount of an unconsumed part of a recording material wrapped on a core of a roll is implemented as an application program for an electronic device having a camera. A storage device stores reference data about the roll and the recording material in an unconsumed state. The method includes taking a picture of the recording material and the core with a camera, deriving from the picture characteristics of a first and second number of pixels representing the core and the unconsumed part of the recording material, respectively, requesting from a user an identification of the roll and the recording material, receiving the identification, matching the identification with the reference data, and calculating the amount of the unconsumed part of the recording material by means of the matched reference data and the characteristics of the first and second numbers of pixels.