Category Archives: P

Processing time

The processing time (processing speed) is an important factor in high-volume digitization projects, especially in the service sector. It not only includes the pure scanning time, but also the time required to transfer, save and, if necessary, to display data. Generally, the processing time is the time that is required between turning individual pages. Depending on the system, there are also other parameters that influence the process time. For example, when scanning with a glass plate or a motorized book cradle, the process time increases, as additional time is required for opening and closing the glass plate or lowering and repositioning the book cradle.

It is therefore advisable for extensive projects not only to consider the pure scanning time of a system specified by the manufacturer, which is always the same regardless of the glass plate, book cradle or other configurations, but also to consider the processing time of the desired system with all the necessary components. Only then is it possible to precisely calculate the time required relative to the amount of documents.

Furthermore, the processing time should always be considered in relation to the area of application of a scanner. Book scanners with incident light work much more slowly than high-speed document feeder scanners, which can easily scan 200 pages per minute. However, the requirements are also different: Book scanners offer a significantly higher quality and are suitable for sensitive, fragile, fragmented as well as stapled and bound originals. Document feeder scanners, on the other hand, usually require their originals to be in good condition and can score particularly well with throughput and the processing of large stacks of paper. Document scanners in the high-end area such as the book2net SCAMIG series also have an adjustable feed control and a unique slow-down mode, with which even sensitive originals and documents of different sizes can be scanned efficiently and gently. However, bound originals cannot be digitized with this type of scanner. High-end document scanners such as the book2net SCAMIG series also have an adjustable feed control and a unique slow-down mode, with which even sensitive originals and documents of different sizes can be scanned efficiently and gently. However, bound originals cannot be digitized with this type of scanner.

But also planetary book scanners used in the production area of service providers or in the public customer area of libraries and archives should provide a scanning time of less than one second and a processing time less than 3 seconds to ensure smooth and efficient workflow.

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Prequalification enables potential suppliers (bidders) to demonstrate in advance their expertise and capability as defined in the procurement and contracting regulations, irrespective of a specific invitation to tender. Prequalification saves companies the effort of having to submit individual certificates (e.g. declarations of turnover, entries in the professional and commercial registers or extracts from criminal records) that are regularly required in award procedures. Instead, public contracting authorities can recognize the collective certificates (prequalification) deposited by prequalification bodies instead of the individual certificates.

Advantages for contracting authorities:

The certificates of suitability are always up to date at the prequalification bodies. Suitability tests of companies for award procedures are easier and faster to perform.

The use of a centralized service increases legal certainty compared to the provision of a wide range of individual certificates.

With the certificate number 06 006 TZGL59 the Chamber of Industry and Commerce Wiesbaden certifies that the company MICROBOX GmbH, Hohe Straße 4-6, 61231 Bad Nauheim, is registered in the official register ( as a suitable company for public contracts. As a prerequisite for registration, the company was prequalified by the Auftragsberatungsstelle Hessen e.V. We will be happy to provide you with the access code to the HPQR certificate upon request.

Planetary scanner

As well as the term planetary scanner, the terms orbital scanner or book scanner are used to describe a category of scanners that are specifically designed for the high-quality and gentle digitization of documents and objects.

In contrast to flatbed scanners and document scanners, the scanning unit of the planetary scanner is located above the support surface, so that the originals can be scanned from above without contact. Bound originals such as books and magazines can be conveniently placed with their backs down on the scanner’s support surface. As a result, they can be opened and pages turned over normally and thus scanned very quickly and easily. In contrast to flatbed scanners, in which the book is pressed upside down on the plate and the spine is exposed to high pressure, planetary scanners are extremely gentle to the book spine.

High-quality planetary light scanners also provide adjustable book cradles, which compensate for the differences in height when turning the pages and also release the spine of the book in order to avoid any pressure. However, if a glass plate is needed such systems often also offer the possibility of an adjustable pressure control.

High-quality optics and sensor technology also guarantee the capturing over the entire surface without distortion, so that even difficult areas such as book folds and marginal areas can be easily scanned in the highest quality.

Planetary scanners are available in a wide variety of designs and formats.


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PPI stands for “Pixel per Inch”. It describes the point or pixel density per inch measured at approx. 2.54 cm. The point density, also known as resolution, is an important measure for the level of detail in the reproduction of a rasterized images and one of the main quality aspects of technical reproduction processes.
The term DPI (dots per inch), which originally comes from the field of printing, is often used in this context. The DPI value describes how many dots a printer sets per inch. During the transition into the digital age and the spread of digital display devices (TV, monitor, smartphone display, etc.), the term was adapted to the pixels. Hence, both the sum of printer dots and pixels are described on 2.54 cm. Both values describe the image resolution and are used in the field of digitization to define the resolution with which an original should be scanned.

Usually round values are used, for example 150, 300, 400 and 600 ppi. However, it should be noted that a high resolution does not necessarily mean that you get a high quality image. The highest possible resolution is always recommended, but factors such as color rendering, depth of field, contrast display, possible distortion, etc. are also decisive. A good result always depends on numerous parameters. You can imagine that you use a camera once in automatic mode and then independently adjust various settings such as exposure time, aperture, white balance, etc. as you like. The resolution of the camera is always the same, but the images will differ extremely from each other. 

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PNG (Portable Network Graphics) is a file format that contains bitmaps or raster images. It was introduced to make the transfer of images on the web easier. PNG uses lossless compression resulting in high image quality as compared to JPEG formats. PNG files support 24-bit RGB color palettes, grayscale images, RGB and RGBA images as well as transparency channel 8 bit. The format, however, does not support other color spaces or CMYK which are suitable for professional-quality print graphics.

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High light intensity, in particular through UV radiation, can cause irreparable damage to sensitive works of art, especially works made of paper, such as graphics, illuminated manuscripts or old books. Depending on time and light intensity, exposure starts biochemical processes that accelerate the organic aging process and lead to structural changes in paper, ink and paint.

Therefore, when digitizing such objects, it is imperative to pay attention to a preservation approved lighting system. With conventional methods such as line sensor technology, that requires a light intensity of up to 14,000 lux, there is a very high risk that valuable objects can be damaged. In contrast, the CMOS sensor technology we use ensures that the documents are captured fast and particularly gently. Specially developed light control modules also offer the option of adapting the lighting in accordance with preservation requirements and reducing it to a light intensity of <= 2500 lux.

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