EscPos | EscPos Library for Java | 3D Printing library
kandi X-RAY | EscPos Summary
kandi X-RAY | EscPos Summary
[license] escpos library for java = a basic java esc/pos implementation for receipt printers. write commands * text(string text) * bytes(byte[] bytes). print commands * printandfeedline() * printandreturntostandardmode() * printandcarriagereturn() * printinpagemode() * printandfeedpaper(int n) * printandreversefeed(int n) * printandfeedlines(int n) * printandreversefeedlines(int n). line spacing commands * setdefaultlinespacing() * setlinespacing(int n). character commands * cancelprintinpagemode() * setprintmode(boolean altfont, boolean emphasized, boolean underlined, boolean doubleheight, boolean doublewidth) * setrightsidecharacterspacing(int n) * setunderline(underline underline) * setemphasize(boolean enabled) * setdoublestrike(boolean enabled) * setfont(font font) * setcharacterset(characterset characterset) * setrotation(rotation rotation) * setcolor(color color) * setcharactercodetable(charactercodetable charactercodetable) * setupsidedownprint(boolean enabled) * setcharactersize(width width, height height) * setwhiteblackreverse(boolean enabled) * setsmoothing(boolean enabled). print position commands * horizontaltab() * setprintdirection(direction direction) * setjustification(justification justification) * setleftmargin(int nl, int nh) * setprintpositionstart(dataaction action) * setprintareawidth(int
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Top functions reviewed by kandi - BETA
- Returns a serial port for the given port
- Gets the Baud rate
- Configure a SerialPort object
- Creates a serial port instance
- Return the current print head
- Prints the data of the print buffer
- Select the character font and styles
- Turns a Kanji code character
- Outputs the pulse to the specified connector
- Cancel Kanji character mode
- Returns the print area width width
- Set the justification of this line
- Turns into a horizontal printable
- Runs the power - off command
- Prints the data in the print buffer
- The multi - character styles
- Create a serial port with the given comms
- Selects a character code system
- Creates an underline mode
- Select a character font
- Send a Buzzer request
- Executes the printing and carriage return
- Switches to Page Mode
EscPos Key Features
EscPos Examples and Code Snippets
Community Discussions
Trending Discussions on EscPos
QUESTION
Context:
I have an EOS thermal printer, but it does not print Arabic characters properly like in this image below:
As you can see, the Arabic text is printed incorrectly and from Left-to-Right (LTR), (it should be Right-to-Left - RTL).
Note: You can clearly see the English text is printed perfectly at the end of the page.
Question:
How can I print Arabic text the right way in flutter?
Additional Info:
Flutter version: 2.5.3 (Stable)
Package Used: escpos
Tested on multiple Android devices running Android version (8, 9 ,10)
...ANSWER
Answered 2021-Nov-19 at 16:55first I have used the esc_pos package and it didn't work. In the end, I've used the printing package to print an Arabic invoice and it works fine, and the explanation below
This is the full code to use the printing package. first, create a class to pass the parameters to it(the parameters that you need to print) in my case 4 required param.
QUESTION
I'm trying to install this library https://github.com/januslo/react-native-bluetooth-escpos-printer after manually linking it to the project I got this error
A problem occurred configuring project ':react-native-bluetooth-escpos-printer'.
Could not resolve all dependencies for configuration ':react-native-bluetooth-escpos-printer:classpath'. Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository 'BintrayJCenter(http://jcenter.bintray.com/)' to redirect to a secure protocol (like HTTPS) or allow insecure protocols. See https://docs.gradle.org/7.2/dsl/org.gradle.api.artifacts.repositories.UrlArtifactRepository.html#org.gradle.api.artifacts.repositories.UrlArtifactRepository:allowInsecureProtocol for more details.
The issue is probably here in this file build.gradle
...ANSWER
Answered 2022-Feb-20 at 01:13The real problem is this line:
QUESTION
I have created a printing module, which work with printer connected at serial port using printer.Serial("COM5")
interface provided by python-escpos.
But now, I have to switch to USB printer rather than serial. My USB printer is connected at virtual printer port (USB001). Now, printer.USB()
requires vendorID and productID but in my case when I see Device Instance Path, it does't contain vendorID and productID (screenshot is attached below). I am stuck here that how can I connect with this USB printer.
Please note that my printer is R290 thermal printer and I have downloaded its driver from http://itambition.com/printer.html. The printer is connected at USB001 and test page is being printed successfully.
...ANSWER
Answered 2022-Jan-11 at 10:00I have resolved the issue using following steps:
- connect USB printer
- install R290 driver from http://itambition.com/printer.html. it will setup USB001 for usb printer
- from printer & scanners menu, select printer properties and share the printer
- open cmd as administrator and run:
net use lpt1 \your-systems-hostname\printer-sharename
- now connect printer.File("LPT1") interface of python-escpos and start printing
QUESTION
I have an app that needs to maintain a long (indefinite) connection to a usb device and print a potentially unlimited number of times to it. So, it needs to make a lot of claims on the same device interface.
Eventually my app breaks because on the 65th claim I get a LIBUSB_ERROR_ACCESS
error thrown. Is it possible to fix this with node-usb
? Possibly related to
- https://github.com/libusb/libusb/issues/16
- https://github.com/node-usb/node-usb/issues/302#issuecomment-988657538
environment and hardware
...ANSWER
Answered 2021-Dec-09 at 10:10I got around this by using a main thread to manage two child threads
QUESTION
I have two Bluetooth thermal printers as well as an integrated device.
One of the printers doesn't support QR codes via GS ( k .. 49, so I'm printing by loading a file.bmp into a Bitmap kotlin class and then sending as image via GS v 0.
The problem I'm facing is that when I print the QR image the other printer stalls mid-image.
I must restart the printer for it to work properly, otherwise it'll print garbage.
The source file has the following characteristics:
- 82x82 pixels
- 2.9x2.9 cm print size (needs to be 3 cm)
- 24 bits per pixel
- 2 colors
It's loaded into a kotlin Bitmap as such:
...ANSWER
Answered 2021-Jun-30 at 16:42Turns out the problem wasn't in the printer buffer, missing ESC/POS command or data size.
I must wait before closing the Bluetooth socket otherwise there may be unsent data.
So,
QUESTION
I have a problem regarding the german umlauts when trying to print a shopping list from alexa with flask. The code I use is:
...ANSWER
Answered 2021-May-20 at 13:15Your content
is bytes
, not a string, and calling str()
on it will convert it into a string, but stupidly based on the __repr__
. Instead, call get_data
differently:
QUESTION
Can someone help me.I am now Currently working on an app and it works on my few hours but now i have an error message. i also tried updating the EXT{} on different version
...ANSWER
Answered 2021-May-12 at 16:00Seems this is an issue affecting a lot of developers recently. Me too faced the same issue. The following solutions worked for me.
- Change react-native-push-notification version to ^7.3.0. This solved the build issue in one of my project.
OR
- Do the below mentioned changes.
In android/app/build.gradle, add the below code to dependencies:
implementation 'com.google.firebase:firebase-messaging:21.1.0'
In android/build.gradle, make the below changes:
QUESTION
can you help me for this problem..?
I use library mike42 for printing receipt.. the device I used :
- Printing receipt with Thermal Printer Panda PRJ-080B
- Printing receipt with Dot Matrix EPSON LQ-2190
in this case, alignment text is not same this is result of printing
...ANSWER
Answered 2020-Nov-30 at 09:10Okay, problem solved..
make specific pitch setting on your Dot-matrix..
Change PS Pitch to Specific Pitch (ex : 10 cpi, 12 cpi, etc)
QUESTION
my cashier project build in laravel. i need print receipt from web browser via mobile bluetooth.
i use mike42/escpos and RawBT package.
my program is working fine when running in localhost. but, doesn't work in live server
this is my VIEW :
...ANSWER
Answered 2020-Nov-18 at 13:26I think this is a little bit of problem..
in mike42 you should activate the requirement php extension in your server. in my case, i forgot activating intl extension
QUESTION
I need help finding the device id and product id for my printer, these specifications are required in this printing library for printers with ESCPOS support found here.
This is what I have when I follow instructions for getting product and vendor ids in the properties tab
Clarify
- How do I find exact product and vendor ids
- What are usb input and output endpoints and where can they be found?
ANSWER
Answered 2020-Nov-17 at 04:45I have found a tool here that enables you to view the specs for all USB devices in the system
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install EscPos
You can use EscPos like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the EscPos component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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