Yotsuba Printing Enhances Information for Selecting Custom Smartphone Soft Cases (TPU), Explaining Materials, Case Colors, and Submission Guidelines

MAW Co., Ltd. (headquartered in Chuo-ku, Osaka City, Osaka Prefecture), operator of the custom goods production service "Yotsuba Printing," has released explanatory content to strengthen information provision for users considering the production of custom smartphone soft cases (TPU).

This content introduces details not fully conveyed on product sales pages, such as the characteristics of TPU material, differences in design appearance based on case color (white, clear, black), methods for creating white underbase layers, print areas, and key points to consider when preparing submission data.

By organizing essential pre-purchase information, the goal is to help users resolve uncertainties that cannot be easily judged from product specifications alone—such as compatible device models, case color combinations, and design data creation—enabling easier selection of smartphone cases suited to their needs.

Key Announcement Points

Yotsuba Printing expands pre-purchase information for custom smartphone soft cases (TPU)

Clarifies differences in TPU material properties and case colors (white, clear, black)

Explains how to create white underbase layers and key data submission considerations

Compares TPU cases with hard cases and folio cases to support product selection

Separates roles between product sales pages and explanatory content to provide decision-making support before production

Background of the Release

Custom smartphone soft cases (TPU) are custom goods made by UV inkjet printing photos, illustrations, and logos onto flexible TPU material cases. They are widely used for fan merchandise, pet-themed goods, gifts, and creator sales items.

When producing custom smartphone cases, users must confirm not only price and delivery time but also compatible device models, available case colors per model, print areas, and design data creation methods. In particular, cases like clear or black variants require the creation of a white underbase layer, and submission methods vary by product, making it difficult for first-time users to make informed decisions.

Product sales pages are primarily structured around pricing, delivery times, compatible models, and ordering methods, making it challenging to fully explain material characteristics, differences between types, and design data preparation tips. To address these pre-purchase uncertainties and help users select suitable products, Yotsuba Printing is enhancing its information delivery through dedicated explanatory content.

Content Covered in the Explanatory Guide

Characteristics of TPU material and ease of installation/removal

Differences among white, clear, and black case colors

Comparison with hard cases and folio cases

Printing method (UV inkjet printing) and print area

How to create white underbase layers for clear and black cases

Creating transparent areas and data processing considerations

Limitations on semi-transparent and blur effects

Safe placement relative to camera cutouts and edges

Recommended image resolution and outline conversion

Notes on potential print misalignment

Submission methods using model-specific templates

Use cases and design ideas

Frequently asked questions

By organizing this information, users can better understand device compatibility, case color selection, and critical data preparation points before starting production. Especially for TPU soft cases, features like white underbase and transparency handling are difficult to grasp from product pages alone, so this guide serves as a valuable pre-purchase decision-making resource.

Features of Custom Smartphone Soft Cases (TPU)

Custom smartphone soft cases (TPU) are made by UV inkjet printing photos, illustrations, and logos onto the surface of flexible TPU material cases.

TPU is a flexible plastic material, making it easier to install and remove compared to hard cases. Printing is full-color UV inkjet on the case surface only—sides are not printed. Case colors include white, clear, and black, though available colors vary by device model. Compatible models differ by device, so please check the latest availability on the product page or order screen. Orders can be placed from just one unit. When selecting clear or black cases, a white underbase layer must be created. Additionally, some semi-transparent or blur effects may not be supported in printing.

Key Points to Know Before Production

Differences in appearance by case color

White cases allow colors in photos and illustrations to appear as intended. Clear cases are ideal for designs that incorporate the underlying color beneath unprinted areas. Black cases utilize the case’s dark background effectively, but require proper white underbase settings for printed areas.

Creating white underbase layers

When selecting clear or black cases, a white underbase layer must be prepared beneath the color design. Areas without a white underbase may be affected by the case’s transparency or black color, resulting in unintended color reproduction.

Print area and side treatment

Printing is limited to the case surface; sides retain the base material color. Instead of attempting to cover the entire case with a continuous pattern, designing for a natural finish on the back improves visualization of the final look.

Design data preparation tips

Images should be prepared at original size with a minimum resolution of 300dpi (recommended 350dpi). Text elements must be outlined. For clear cases, transparent areas in the design must be set as transparent in the data file—care must be taken not to confuse white-filled areas with transparent ones. Additionally, since each case is printed individually, slight misalignment of up to 3mm may occur.

Differences from hard cases and folio cases

TPU soft cases are soft and easy to install/remove. For users preferring a rigid feel, hard cases are suitable. For screen protection or storage functionality, folio cases are recommended alternatives.

Ideal for Pre-Production Confirmation by

Fan merchandise creators

Pet-themed goods makers

Gift givers

Doujin goods producers

Creators selling original goods

Shops and organizations creating branded merchandise

Roles of Product Page vs. Explanatory Content

The product sales page provides essential ordering information such as price, delivery time, compatible models, available case colors, and ordering methods. In contrast, the explanatory content offers pre-purchase decision support by covering TPU material properties, design differences by case color, white underbase creation, data submission tips, comparisons with other case types, and usage scenarios.

The explanatory content does not replace the product page but serves as supplementary information to resolve pre-production questions and help users make informed choices.

Published Content

▼ How to Make and Choose Custom Smartphone Soft Cases (TPU) | Material, White Underbase, and Submission Tips

https://www.yotsuba-insatsu.com/original-goods/smartphone-tpu-softcase/

Main topics covered:

TPU material properties and differences by case color

Comparison with hard and folio cases

How to create white underbase layers

Design data preparation tips

Use cases and FAQs

Related product page:

https://www.yotsuba-in