Method to control a substrate temperature, as well as printing system to print to a substrate

Patent metadata

Field	Value
Publication number	US-2016229203-A1
Application number	US-201615016439-A
Country	US
Kind code	A1
Filing date	Feb 5, 2016
Priority date	Feb 10, 2015
Publication date	Aug 11, 2016
Grant date	—

Abstract

In a method or system to control a temperature of a substrate to be printed to and which exhibits said temperature during a traversal of a printing system, specifically selecting or controlling a fluid temperature of a liquid fluid to be applied onto the substrate to specifically influence the substrate temperature, the fluid being applied onto the substrate before the substrate is printed to. At least one of the fluid temperature and a quantity of the fluid applied onto the substrate per time unit at least depending on at least one of a first measurement value for a temperature of the substrate before the application of the fluid and a second measurement value for a surface temperature of the substrate after the application of the fluid.

First claim

We claim as our invention:

1 . A method to control a temperature of a substrate to be printed to and which exhibits said temperature during a traversal of a printing system, comprising the steps of:
selecting or controlling a fluid temperature of a liquid fluid to be applied onto the substrate to influence said substrate temperature, said fluid being applied onto the substrate before the substrate is printed to; and controlling at least one of said fluid temperature and a quantity of said fluid applied onto the substrate per time unit depending on at least one of a first measurement value for a temperature of said substrate before said application of said fluid and a second measurement value for a temperature of said substrate after said application of said fluid.

2 . The method according to claim 1 wherein the substrate temperature is a surface temperature of said substrate.

3 . The method according to claim 1 wherein the substrate temperature to be controlled is a temperature which the substrate exhibits upon printing by a print group of the printing system or upon a coating of the substrate.

4 . The method according to claim 1 wherein the fluid to be applied onto the substrate is tempered before the application, and the substrate is tempered by the application of the fluid.

5 . The method according to claim 1 wherein at least one of moisture content, an electrical resistance, an electrostatic charging capability, an absorption capability, a travel capability, and a wetting capability of the substrate is also influenced by the application of the fluid.

6 . The method according to claim 1 wherein the at least one of the fluid temperature and the quantity of the fluid that is applied onto the substrate per time unit are controlled to at least one of: achieve and maintain an operating point which is defined at least by a nominal substrate temperature, and a nominal moisture content of the substrate.

7 . The method according to claim 1 wherein a regulation of the substrate temperature to be influenced takes place.

8 . The method according to claim 1 wherein the fluid is a primer liquid, a fountain solution or a printing ink.

9 . The method according to claim 1 wherein at least one of a targeted homogenization and adjustment of at least one selected substrate property is also caused by the application of the fluid.

10 . The method according to claim 1 wherein an electrical resistance of the substrate is measured along a width direction of the substrate transverse to its transport direction at a plurality of measurement points.

11 . A printing system for printing to a substrate, comprising:
at least one applicator applying a liquid fluid onto the substrate before the substrate is printed to; at least one temperature adjustor to bring the fluid to a selected or controlled fluid temperature; a measurer to measure a temperature of the substrate at least one of: before the application of the fluid and after the application of the fluid; and a controller which controls at least one of the fluid temperature and a quantity of said fluid applied onto the substrate per time unit depending on at least one of a first measurement value for a temperature of said substrate before said application of said fluid and a second measurement value for a temperature of said substrate after said application of said fluid.

12 . The printing system according to claim 11 wherein the printing system comprises a digital printer.

13 . The system according to claim 11 wherein said temperature of the substrate comprises a surface temperature of the substrate.

14 . The system according to claim 11 wherein the substrate temperature to be controlled is a temperature which the substrate exhibits upon printing by a print group of the printing system or upon a coating of the substrate.

15 . The system according to claim 11 wherein the fluid to be applied onto the substrate is tempered before the application, and the substrate is tempered by the application of the fluid.

16 . The method according to claim 11 wherein at least one of: moisture content, an electrical resistance, an electrostatic charging capability, an absorption capability, a travel capability, and a wetting capability of the substrate is also influenced by the application of the fluid.

17 . The system according to claim 11 wherein the at least one of the fluid temperature and the quantity of the fluid that is applied onto the substrate per time unit are controlled to at least one of: achieve and maintain an operating point which is defined at least by a nominal substrate temperature and a nominal moisture content of the substrate.

18 . The system according to claim 11 wherein a regulation of the substrate temperature to be influenced takes place.

19 . The system according to claim 11 wherein the fluid is a primer liquid, a fountain solution, or a printing ink.

20 . The system according to claim 11 wherein at least one of a targeted homogenization and adjustment of at least one selected substrate property is also caused by the application of the fluid.

21 . The system according to claim 11 wherein an electrical resistance of the substrate is measured along a width direction of the substrate transverse to its transport direction at a plurality of measurement points.

Assignees

• Oce Printing Systems Gmbh & Co Kg

Inventors

• Gerlach Sabine
• Montag Thomas
• Has Michael

Classifications

• B41J13/0009 Primary

  control of the transport of the copy material · CPC title

• B41J11/00242 Primary

  Controlling the temperature of the conduction means · CPC title

• B41J11/00244

  Means for heating the copy materials before or during printing · CPC title

• G03G15/1695

  with means for preconditioning the paper base before the transfer · CPC title

• B65H2301/5142

  Moistening · CPC title