PCLm is one of two raster formats defined in the WiFi-Direct peer-to-peer printing specification, which is part of the set of technologies that define WiFi Direct printing. The PCLm raster format is a strict subset of the PDF standard so that low-end consuming printers can process the PCLm based pages with minimal computing resources.
Printers supporting WiFi direct printing use technologies like mDNS to enable printer discovery and IPP to enable mobile clients to query the printer’s capabilities (such as page sizes) as well as submit print jobs to the printer with specific printer configuration characteristics.
Solution at a Glance
QualityLogic has developed a Functional Test Suite for the PCLm specification which covers the allowable subset of PDF used in PCLm for defining rasterized documents as well as the various media sizes and printer configuration characteristics that may impact the printer’s ability to successfully render the PCLm document. The test suite contains both positive and negative test cases that iterate through a range of PCLm raster format characteristics including strip height, color spaces, compression filters, media sizes, and source resolutions.
Configurable test scenarios
PCLm FTS will query the target printer and dynamically configure the test cases on the fly to accommodate the capabilities of the printer.
Small number of pages to compare
This not only saves you labor and money, it’s a “greener” way to test using less paper, consumables, and energy.
Quick, easy bug isolation
Ability to run each test case separately and repeatedly will provide a quick and easy way of bug isolation and verification.
Supports a variety of media sizes
A4, A5, JIB-B5, Letter, Legal, Executive, JIS-B4, SRA3, A3, 11x18, 11x17, Oficio, Folio, Statement, hagaki, DL Env, C5 Env, B5 Env, 7 ¾ Env, 9 Env and 10 Env sizes.
PCLm Test Cases Overview
Each test case exercises a specific PCLm or IPP characteristic. Characteristics that are not part of the test case definition can be controlled via a set of drop down menus that are dynamically populated by using IPP to query the printer’s capabilities. For instance, tests that exercise various strip heights can be run using different media sizes and source resolutions by selecting the desired settings from the drop down menus before running the test cases.
General areas tested include: Strip height | Compression and color space | Default values | Key values | Page tree variation | Page object and strip stream definition | Size limits | Non-abort conditions | Raster back side | Default printer description attributes | Resolutions supported | Media supported | Orientation | Color modes supported | Invalid PCLm content | Non-streamable content | Invalid versions
Key Features and Functions
|Automatically discover target printers or use custom URLs||See detailed IPP log messages from the printer|
|Preview any test case and run in an ad hoc fashion||Preview PCLm documents in a PDF viewer|
|Tag sets of test cases and run in batch mode||Progress bar and print time status message keep user informed|
|Select a wide variety of default test case characteristics using drop down menus||Add your own images to test cases|
|Print PCLm test cases to file for debugging||View consolidated log messages from batch runs|
|Select ¼ sized images and draft printing over edge-to-edge images to save toner||Restrict sizes used for test cases that iterate through media sizes|