Manual imaging device

• US 6,942,402 B1
• Filed: 10/19/2000
• Issued: 09/13/2005
• Est. Priority Date: 10/19/2000
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Slupe, James P., Shannon, Terrence M.
• Primary Examiner(s): CHAU, MINH H
• Application Number:
  US09/692,844
• Time in Patent Office: 1,790 Days
• Field of Search: 400/61, 400/62, 400/70, 400/76, 400/88, 347/109
• US Class Current: 400/88
• CPC Class Codes: B41J 3/36 for portability , i.e. hand-held printers or laptop printers B41J3/4075 takes precedence

Abstract

An embodiment of a manual printer is particularly well suited for forming images on the surface of uneven objects. The embodiment of the manual printer includes a microprocessor for controlling its operation. Image data is stored in RAM and the firmware for controlling the operation of the microprocessor is stored in ROM. A print head interface generates drive signals for a print head using data received from the microprocessor. A signal is generated by an emitter. A receiver in the manual printer receives the signal. The signal includes an x-component, a y-component, and a z-component. The microprocessor determines the position of the manual printer with respect to a reference location using the components of the signal. A distance sensor in the manual printer measures the distance of the print head from the surface of the object. A tilt sensor in the manual printer measures an angle between a longitudinal axis in the manual printer and the surface of the object. An acceleration sensor in the manual printer measures the acceleration resulting from movement by a user. A display in the manual printer allows the user to preview and select images for performing an imaging operation. A user begins forming an image by depressing a button while moving the manual printer over the surface of the object. If the microprocessor determines that position, distance, angle, and acceleration are within allowable limits, ink is ejected from the print head to form the image.

Claims

1. A manual imaging system, comprising:

an emitting device configured to emit a radiated signal;

a receiving element arranged to receive the radiated signal;

a memory to store image data;

an imaging mechanism configured to place colorant onto an object according to data related to the image data, with the radiated signal indicative of a position of the imaging mechanism relative to a reference point; and

a processing device arranged to receive a representation of the radiated signal and configured to selectively send the data to the imaging mechanism using the representation and selectively receive the image data from the memory.

2. The manual imaging system as recited in claim 1, wherein:

the imaging mechanism includes an imaging head interface arranged to receive the data and configured to generate a plurality drive signals using the data; and

the imaging mechanism includes an imaging head configured to place the colorant onto the object according to the plurality of drive signals.

3. The manual imaging system as recited in claim 2, further comprising:

a converter coupled between the receiving element and the processing device and configured to generate the representation from the radiated signal where the representation includes a digital representation.

4. The manual imaging system as recited in claim 3, further comprising:

a display interface arranged to receive image data from the processing device and configured to generate display data from the image data; and

a display to display an image corresponding to the display data.

5. The manual imaging system as recited in claim 4, wherein:

the imaging head includes a first print head for placing cyan colorant onto the object, a second print head for placing magenta colorant onto the object, a third print head for placing yellow colorant onto the object, and a fourth print head for placing black colorant onto the object according to the plurality of drive signals.

6. The manual imaging system as recited in claim 5, further comprising:

a first sensor to measure a distance between a surface of the object and the imaging head;

a second sensor to measure an acceleration of the imaging head;

a third sensor to measure an angle between an axis of the imaging head and the surface; and

a multiplexer coupled between the converter and the receiving element to selectively connect a first component, a second component, or a third component comprising the radiated signal to the converter.

7. The manual imaging system as recited in claim 6, wherein:

the receiving element includes a first receiving element, a second receiving element, and a third receiving element configured to receive, respectively the first component, the second component, and the third component; and

the processing device includes a microprocessor configured to execute instructions to selectively send the data to the imaging head interface and the image data to the display interface, and configured to execute instructions to compute a position of the imaging head with respect to a reference location and determine the suitability of the position, the distance, the acceleration, and the angle for placing the colorant onto the object.

8. The manual imaging system as recited in claim 2, wherein:

the emitting device includes a first radiator located at a first position to radiate a first component of the radiated signal and a second radiator located at a second position to radiate a second component of the radiated signal; and

the processing device includes a configuration to determine a position in space using the first component and the second component.

9. A manual imaging device, comprising:

a receiving element arranged to receive a radiated signal indicative of a position of the manual imagine device relative to a reference point;

a memory to store image data;

an imaging head configured to place ink onto an object according to a plurality of drive signals;

an imaging head interface arranged to receive data related to the image data and configured to generate the plurality of drive signals using the data;

a processor arranged to receive a representation of the radiated signal and configured to selectively send the data to the imaging head interface using the radiated position signal and selectively receive the image data from the memory.

10. The manual imaging device as recited in claim 9, wherein:

the imaging head includes a first print head for placing cyan ink onto the object, a second print head for placing magenta ink onto the object, a third print head for placing yellow ink onto the object, and a fourth print head for placing black ink onto the object.

11. The manual imaging device as recited in claim 10, further comprising:

a first sensor coupled to the processor and configured to measure a distance between a surface of the object and the imaging head;

a second sensor coupled to the processor and configured to measure an acceleration of the imaging head;

a third sensor coupled to the processor and configured to measure an angle between an axis of the imaging head and the surface;

a converter coupled to the processor and configured to generate the representation of the radiated signal;

a multiplexer coupled between the converter and the receiving element to selectively connect a first signal, a second signal, or a third signal comprising the radiated signal to the converter;

a display interface arranged to receive image data from the processor and configured to generate display data from the image data; and

a display to display an image corresponding to the display data.