Printing device and printing system

Patent metadata

Field	Value
Publication number	US-11809760-B2
Application number	US-202217587317-A
Country	US
Kind code	B2
Filing date	Jan 28, 2022
Priority date	Mar 24, 2021
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

When a printing interruption cause occurs during printing of an image on a printing medium, printing of a page being printed is completed, and further only a position mark is printed on a printing resumption page. Then, a printing unit is stopped, and a conveyance speed is decelerated to stop conveyance of the printing medium. Next, the printing medium is rewound so that printing is resumed from the printing resumption page. Thereafter, the conveyance speed is accelerated to a predetermined speed, and printing is resumed from the printing resumption page on which the position mark is printed.

First claim

What is claimed is:

1. A printing device configured to print an image over a plurality of pages on a first surface of a printing medium having a long belt shape, the printing device comprising:
a conveyance unit configured to convey the printing medium;
a printing unit configured to print an image by ejecting ink on the first surface of the printing medium conveyed by the conveyance unit;
a fixing unit configured to fix an image printed on the first surface of the printing medium by the printing unit to the printing medium; and
a control unit,
wherein the control unit includes:
a printing control unit configured to control operation of the printing unit; and
a conveyance control unit configured to control operation of the conveyance unit,

wherein the printing control unit includes a printing interruption control unit configured to control, when a printing interruption cause occurs, the printing unit to interrupt printing operation after completing printing of a printing-interruption-time last page being printed on the first surface of the printing medium, and further printing a position mark indicating a printing resumption position on a printing resumption page that is a next page of the printing-interruption-time last page,
wherein the conveyance control unit includes a conveyance speed control unit configured to control, after interruption of printing operation, the conveyance unit to start deceleration of a conveyance speed of the printing medium and stop a conveyance of the printing medium,
wherein the conveyance speed control unit controls the conveyance unit so that the printing-interruption-time last page is conveyed to the fixing unit when causing the conveyance unit to stop the conveyance of the printing medium,
wherein the conveyance control unit includes a rewinding control unit configured to control the conveyance unit so that the printing medium is rewound after fixing processing on the printing-interruption-time last page by the fixing unit is completed, and
wherein the rewinding control unit controls the conveyance unit so that the printing medium is rewound until a distance from the printing resumption position of the printing resumption page to the printing unit becomes equal to or longer than an acceleration distance required to obtain a conveyance speed that allows the printing resumption page to be printed, before the conveyance of the printing medium is resumed for printing resumption after printing operation is interrupted.

2. The printing device according to claim 1 , wherein the rewinding control unit controls the conveyance unit so that the printing medium is rewound by a total distance of a deceleration distance from start of deceleration of the conveyance speed of the printing medium to stop of the conveyance of the printing medium, a length of the printing unit in a conveyance direction, and the acceleration distance.

3. The printing device according to claim 1 , wherein
the conveyance unit includes a roller and a rotary encoder, and
the distance at which the printing medium is being rewound when the conveyance of the printing medium is resumed for printing resumption is found by the rotary encoder counting a number of rotations of the roller.

4. The printing device according to claim 1 , further comprising a reading unit configured to read the position mark, the reading unit being disposed on an upstream side in a conveyance direction with respect to the printing unit and on a downstream side in the conveyance direction with respect to a position of the position mark after the printing medium is rewound,
wherein when the conveyance of the printing medium is resumed after interruption of printing operation, the reading unit reads the position mark printed on the printing resumption page and notifies the printing control unit that the printing resumption page has passed.

5. The printing device according to claim 1 , wherein the position mark is printed only on the printing resumption page.

6. The printing device according to claim 1 , wherein the printing control unit controls operation of the printing unit so that a mark having a shape different from the position mark is printed on a page on which the image is printed.

7. The printing device according to claim 1 , further comprising an inspection unit configured to inspect an image printed by the printing unit,
wherein the control unit further includes an inspection control unit configured to control operation of the inspection unit, and
the inspection control unit controls the operation of the inspection unit to inspect images for all the pages for which the inspection is not completed when the conveyance of the printing medium is resumed after interruption of printing operation.

Assignees

• Screen Holdings Co Ltd

Inventors

• Takahashi Susumu
• Ishida Tetsuya

Classifications

• G06F3/121 Primary

  Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted · CPC title

• B41J13/0045

  concerning sheet refeed sections of automatic paper handling systems, e.g. intermediate stackers (printing on both faces B41J3/60) · CPC title

• G06F3/1208

  resulting in improved quality of the output result, e.g. print layout, colours, workflows, print preview · CPC title

• G06F3/1234

  Errors handling and recovery, e.g. reprinting (G06F3/1261 takes precedence) · CPC title

• G06F3/1282

  High volume printer device · CPC title