Liquid ejecting apparatus, liquid ejecting method, and non-transitory recording medium

Patent metadata

Field	Value
Publication number	US-9744783-B2
Application number	US-201615391098-A
Country	US
Kind code	B2
Filing date	Dec 27, 2016
Priority date	Jan 8, 2016
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A liquid ejecting apparatus for ejecting materials on a recording medium in accordance with a position of the apparatus and an image to be formed. The apparatus, movable on the recording medium by an external force, includes a position calculating unit configured to calculate the position; an electric power supplying unit configured to supply electric power to a part that the position calculating unit uses to calculate the position when a state of the apparatus changes to a second operating mode whose electric power consumption is less than that of a first operating mode of ejecting the materials; and a return factor detecting unit configured to detect a return factor for returning to the first operating mode from the second operating mode. When returning to the first operating mode, the apparatus restarts to eject the materials from the position that has been calculated in the second operating mode.

First claim

What is claimed is:

1. A liquid ejecting apparatus for ejecting materials on a recording medium in accordance with a position of the liquid ejecting apparatus on the recording medium and an image that is to be formed on the recording medium, the liquid ejecting apparatus being movable on the recording medium by an external force, the liquid ejecting apparatus comprising;
a position calculating unit configured to calculate the position of the liquid ejecting apparatus on the recording medium;
an electric power supplying unit configured to supply electric power to a part that the position calculating unit uses to calculate the position when a state of the liquid ejecting apparatus changes to a second operating mode whose electric power consumption is less than an electric power consumption of a first operating mode of ejecting the materials on the recording medium; and
a return factor detecting unit configured to detect a return factor for returning the state of the liquid ejecting apparatus to the first operating mode from the second operating mode,
wherein, when the state of the liquid ejecting apparatus returns to the first operating mode from the second operating mode, the liquid ejecting apparatus restarts to eject the materials from the position that has been calculated by the position calculating unit in the second operating mode.

2. The liquid ejecting apparatus according to claim 1 , further comprising:
an ejection control unit,
wherein, in the second operating mode, the power supplying unit stops to supply the electric power to a first storage unit in which image data relating to the image is stored,
wherein, when the state of the liquid ejecting apparatus changes to the second operating mode from the first operating mode, at least part of the image data is moved to a second storage unit, to which the electric power is supplied even in the second operating mode, and
wherein, when the state of the liquid ejecting apparatus returns to the first operating mode from the second operating mode, the ejection control unit reads out, from the second storage unit, the image data, which is in accordance with the position that the position calculating unit calculates, to eject, on the recording medium, the materials based on the image data.

3. The liquid ejecting apparatus according to claim 2 , wherein the ejection control unit determines, based on at least a predetermined moving speed of the liquid ejecting apparatus and a time required for completely returning to the first operating mode from the second operating mode, a size of the image data to be moved to the second storage unit from the first storage unit.

4. The liquid ejecting apparatus according to claim 3 , wherein the ejection control unit determines the size of the image data based on a time obtained by adding a time, for moving the image data to the second storage unit from the first storage unit, to the time, required for completely returning to the first operating mode from the second operating mode.

5. The liquid ejecting apparatus according to claim 4 ,
wherein the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the second operating mode is equivalent to the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the first operating mode,
wherein, in the second operating mode, the power supplying unit supplies the electric power to a first part, which receives the image data relating to the image, and a second part, which receives an operation to the liquid ejecting apparatus, to make the first part and the second part be in an operating state, and
wherein the electric power that the power supplying unit supplies to the first part and the second part in the second operating mode is less than the electric power that the power supplying unit supplies to the first part and the second part in the first operating mode.

6. The liquid ejecting apparatus according to claim 2 ,
wherein the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the second operating mode is equivalent to the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the first operating mode,
wherein, in the second operating mode, the power supplying unit supplies the electric power to a first part, which receives the image data relating to the image, and a second part, which receives an operation to the liquid ejecting apparatus, to make the first part and the second part be in an operating state, and
wherein the electric power that the power supplying unit supplies to the first part and the second part in the second operating mode is less than the electric power that the power supplying unit supplies to the first part and the second part in the first operating mode.

7. The liquid ejecting apparatus according to claim 3 ,
wherein the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the second operating mode is equivalent to the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the first operating mode,
wherein, in the second operating mode, the power supplying unit supplies the electric power to a first part, which receives the image data relating to the image, and a second part, which receives an operation to the liquid ejecting apparatus, to make the first part and the second part be in an operating state, and
wherein the electric power that the power supplying unit supplies to the first part and the second part in the second operating mode is less than the electric power that the power supplying unit supplies to the first part and the second part in the first operating mode.

8. The liquid ejecting apparatus according to claim 2 , further comprising:
an operating mode changing unit configured to change the state of the liquid ejecting apparatus to the first operating mode from the second operating mode in a case where the position calculated by the position calculating unit does not change for a time longer than a predetermined time and the position is regarded as constant,
wherein the return factor detecting unit detects the return factor in a case where a movement of the liquid ejecting apparatus is detected by the position calculated by the position calculating unit in the second operating mode.

9. The liquid ejecting apparatus according to claim 8 ,
wherein, in the second operating mode, the power supplying unit supplies the electric power only to the part, which the position calculating unit uses to calculate the position, and cuts the electric power to the other parts of the liquid ejecting apparatus,
wherein the operating mode changing unit changes the state of the liquid ejecting apparatus to a third operating mode from the second operating mode in a case where the position calculated by the position calculating unit does not change for the time longer than the predetermined time and the position is regarded as constant, an electric power consumption of the third operating mode being less than the electric power consumption of the second operating mode,
wherein the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the position, in the third operating mode is equivalent to the electric power that the power supplying unit supplies to the part, which the position calculating unit uses to calculate the positi

Assignees

• Hosokawa Toshiaki
• Ricoh Co Ltd

Inventors

• Hosokawa Toshiaki

Classifications

• B41J3/36

  for portability {, i.e. hand-held printers or laptop printers (B41J3/4075 takes precedence)} · CPC title

• B41J2/125 Primary

  Sensors, e.g. deflection sensors {(nozzle clogging detection for cleaning reasons B41J2/16579; detection for compensation for failed nozzles B41J2/2139)} · CPC title

• B41J25/001 Primary

  Mechanisms for bodily moving print heads or carriages parallel to the paper surface · CPC title

• B41J23/00

  Power drives for actions or mechanisms (B41J9/00 {, B41J19/305}  take precedence) · CPC title