THE PRINTING SUPPLIERS

Manufacturer and wholesaler of Inkjet and printing applications

OUR BUSINESS AREAS

Our family of brands includes a number of inkjet printing applications

CHIP DEVELOPMENT

We find solutions for your authentication problems

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In a wide variety of industries, OEMs operate on a similar principle: consumables or components are protected against third-party suppliers through the use of microcontrollers. This is the problem that customers and we are confronted with for new products. Over the years, we have built up extensive know-how in contact and also contactless chips incl. external specialist staff and have successfully implemented many own and external projects.

In the first step, we analyse the overall system, the communication paths and the protocol of communication. In most cases, industry standards are used for this or only slightly modified. Depending on the data transfer protocol, we can record and evaluate the communication. For this purpose, we develop and manufacture our own adapter bridges that act passively in the system and enable unhindered data recording. Depending on the application, up to 100,000 transactions are recorded.

The data collected in the previous step is systematically evaluated. In some cases, data from different chips are collected specifically and evaluated and summarised with programmes. This provides an initial overview of the protocol sequence as well as the memory content of the chip. In addition, we analyse whether, for example, a CRC or another method was used for the error-free processing of data streams or whether encryption methods such as SHA-1 or AES 256 are used. Depending on the application, we may skip the following step.

In a few cases, we consider analysing the hardware of the communication master to analyse the firmware and decode encryption methods if necessary. This step is very time-consuming and extensive with moderate success rates at the same time. However, in order to be able to give our customers a conclusive statement on the solution of the problem, we do this step. There were use cases where this step was absolutely necessary for the solution.

In the following step, we implement the reset - i.e. writing the memory to the initial state - in an individual software. The user interface is designed according to the customer's wishes and the parameters of the memory to be programmed are individually pre-programmed. This ensures a high level of security in the subsequent process. As an alternative to the reset, we develop an alternative chip on a microprocessor basis, even if this is often inevitable. This requires not only the appropriate chip selection in terms of voltage supply and clock frequency of the protocol, but also the design of the circuit board. All steps as well as the writing of the software in C or assembler are worked out by us in-house.
Your advantages
Large number of developed solutions
Comprehensive analysis options
Experience with various protocols (SPI, I²C, UART, CAN...)
External mathematical expertise
Step-by-step approach with discussion of results

ABOUT US

Innovative, Flexible and Sustainable
from the beginning

2015 COMPANY FOUNDATION

Marian Ambrosius got the ball rolling by founding CM printing GmbH. The company started producing high-quality franking cartridges in rented space in Geilenkirchen.
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2017 DRUCKERGURU

Druckerguru is launched. The trade in selected inkjet printers and the sale of matching accessories is established exclusively online under the Druckerguru brand and successfully expanded to this day.

2019 PITNEY BOWES BUSINESS PARTNER

From May 2019, we are an official Business Partner of Pitney Bowes. This strategic partnership enables our customers to benefit from good purchasing conditions for OEM products as well as the offer of high-performance franking machines.
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2019 MOVE TO A NEW LOCATION

In order to cope with the enormous growth of the business, we have moved into a new business building consisting of 200m² of office and social rooms as well as 800 m² of production space in the Rurtal industrial park.

2020 POSTAL SUPPLIES

The worldwide distribution of our accessories for franking machines is bundled for resellers under the Postal Supplies brand. Specific information and new products can thus be clearly communicated to the target group.
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2020 DEVELOPMENT FUNAI CHIP

With Funai's entry into industrial printing, we recognised the opportunities in this market and developed a circuit board to recycle the cartridges. 100% in-house with our own know-how.

2021 POSTSTELLE24

he online direct sale of our products was not on the agenda for a long time, but was desired by many customers. Therefore, we have filled Poststelle24.de with new life and created a clear and contemporary online shop.
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2021 FIRST EXTERNAL ORDERS FOR CHIP DEVELOPMENT

For the first time, we were commissioned to develop a chip for a commercial printing application. In this case, it was possible to reset the original chip using matching sequences - our client was thrilled.

2022 PROFESSIONAL INK

Long dormant in the drawer and now complete - Professional Ink is the goal of CM printing's development journey. The new brand contains everything that makes CM printing stand out and is from now on the new driving force - industrial identification and marking with inexpensive inks "made in Germany".
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2015 COMPANY FOUNDATION

Marian Ambrosius got the ball rolling by founding CM printing GmbH. The company started producing high-quality franking cartridges in rented space in Geilenkirchen.
timeline bild 2

2017 DRUCKERGURU

Druckerguru is launched. The trade in selected inkjet printers and the sale of matching accessories is established exclusively online under the Druckerguru brand and successfully expanded to this day.
timeline bild 3

2019 PITNEY BOWES BUSINESS PARTNER

From May 2019, we are an official Business Partner of Pitney Bowes. This strategic partnership enables our customers to benefit from good purchasing conditions for OEM products as well as the offer of high-performance franking machines.
timeline bild 4

2019 MOVE TO A NEW LOCATION

In order to cope with the enormous growth of the business, we have moved into a new business building consisting of 200m² of office and social rooms as well as 800 m² of production space in the Rurtal industrial park.
timeline bild 5

2020 POSTAL SUPPLIES

The worldwide distribution of our accessories for franking machines is bundled for resellers under the Postal Supplies brand. Specific information and new products can thus be clearly communicated to the target group.
timeline bild 6

2020 DEVELOPMENT FUNAI CHIP

With Funai's entry into industrial printing, we recognised the opportunities in this market and developed a circuit board to recycle the cartridges. 100% in-house with our own know-how.
timeline bild 7

2021 POSTSTELLE24

he online direct sale of our products was not on the agenda for a long time, but was desired by many customers. Therefore, we have filled Poststelle24.de with new life and created a clear and contemporary online shop.
timeline bild 8

2021 FIRST EXTERNAL ORDERS FOR CHIP DEVELOPMENT

For the first time, we were commissioned to develop a chip for a commercial printing application. In this case, it was possible to reset the original chip using matching sequences - our client was thrilled.
timeline bild 9

2022 PROFESSIONAL INK

Long dormant in the drawer and now complete - Professional Ink is the goal of CM printing's development journey. The new brand contains everything that makes CM printing stand out and is from now on the new driving force - industrial identification and marking with inexpensive inks "made in Germany".

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